Differences between the IOC and Clements bird checklists

By Abhijit Menon-Sen <ams@toroid.org>

2007-11-08

This page is a summary of the changes between the International Ornithological Congress's "Birds of the World: Recommended English Names" (Gill, F., and Wright, M., 2006), and the recently-published sixth edition of "The Clements Checklist of Birds of the World" (Clements, J. F., 2007).

Dave Sargeant and David Matson jointly undertook the herculean task of identifying the numerous changes in taxonomy and nomenclature between the two lists. The resulting cross-reference forms the basis for this summary, and I am thankful for their permission to use the data here.

Both the IOC checklist (in CSV, XML, and Excel formats) and the cross-reference (Excel) are freely available for download from WorldBirdNames.org. Unfortunately, the Clements checklist does not seem to be easily available in a machine-readable format.

What I did

Dave Sargeant announced the availability of this cross-reference to the orientalbirding mailing list on 2007-10-25, and on request, sent me the spreadsheet two days later. I got around to looking through it only on 2007-11-08, when I wrote the program to produce this summary.

I opened the spreadsheet (using OpenOffice), and exported the common and scientific names from both lists into a CSV file (a surprisingly tedious task). Then I wrote a small script to read the CSV file, build a list of changes, and use it to produce a concise description of the changes for each affected genus.

In brief, the program reads a list of records that say "Species X from checklist A is the same as species Y from checklist B" and identifies the differences between X and Y. For example, here is the record for the Booted Eagle from the CSV file:

"Hieraaetus pennatus","Booted Eagle","Aquila pennata","Booted Eagle"

Here we see that the Clements list assigns the species to the genus Aquila and changes its specific name, but leaves its common name unaltered.

If you're interested, here's the commented source code for the program.

The changes

This summary treats the IOC list as the baseline, and for each genus (in alphabetical order) describes the changes needed to reach agreement with the Clements list. Any genus not mentioned below is treated identically by both lists (e.g. Ephippiorhynchus).

The summary does not (at the moment) attempt to detect "trivial" common name (e.g. Grey vs. Gray) and specific name (e.g. pennatus vs. pennata) changes, but this may change in future.

There are 3504 changes in all, spread across 1165 genera.

Abroscopus:
    3 species in IOC list.
    1 species given new common name.

Accipiter:
    50 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    12 species given new common names.
    1 species given new specific and common names.

Aceros:
    5 species in IOC list.
    6 species only in Clements list.
    1 species given new common name.

Achaetops:
    1 species in IOC list.
    1 species reassigned to genus Chaetops with new common name.

Acridotheres:
    9 species in IOC list.
    1 species only in Clements list.
    2 species given new common names.

Acritillas:
    1 species in IOC list.
    1 species reassigned to genus Iole.

Acrocephalus:
    37 species in IOC list.
    27 species given new common names.
    2 species given new specific and common names.

Actenoides:
    6 species in IOC list.
    3 species given new common names.

Actitis:
    2 species in IOC list.
    1 species given new specific name.

Aechmorhynchus:
    1 species in IOC list.
    1 species reassigned to genus Prosobonia with new specific name.

Aegithalos:
    7 species in IOC list.
    1 species not in Clements list.
    6 species given new common names.

Aegithina:
    4 species in IOC list.
    1 species given new common name.

Aegotheles:
    6 species in IOC list.
    3 species only in Clements list.
    1 species given new common name.

Aegypius:
    3 species in IOC list.
    1 species reassigned to genus Torgos.
    1 species reassigned to genus Trigonoceps with new specific name.

Aepypodius:
    2 species in IOC list.
    2 species given new common names.

Aerodramus:
    25 species in IOC list.
    2 species only in Clements list.
    3 species given new common names.

Aethia:
    4 species in IOC list.
    1 species given new common name.

Aethopyga:
    17 species in IOC list.
    1 species only in Clements list.
    5 species given new common names.

Afrotis:
    2 species in IOC list.
    2 species reassigned to genus Eupodotis with new common names.

Agapornis:
    9 species in IOC list.
    1 species given new common name.

Agelaioides:
    2 species in IOC list.
    1 species given new common name.

Agriornis:
    5 species in IOC list.
    1 species given new specific name.
    1 species given new common name.

Agyrtria:
    9 species only in Clements list.

Ailuroedus:
    2 species in IOC list.
    2 species only in Clements list.

Alario:
    2 species only in Clements list.

Alauda:
    3 species in IOC list.
    1 species given new common name.

Alcedo:
    17 species in IOC list.
    2 species not in Clements list.
    2 species given new common names.

Alcippe:
    18 species in IOC list.
    3 species given new common names.

Alectoris:
    7 species in IOC list.
    1 species given new common name.

Alectroenas:
    3 species in IOC list.
    3 species given new common names.

Alectura:
    1 species in IOC list.
    1 species given new common name.

Alethe:
    5 species in IOC list.
    1 species given new common name.

Alisterus:
    3 species in IOC list.
    3 species given new common names.

Alle:
    1 species in IOC list.
    1 species given new common name.

Allenia:
    1 species in IOC list.
    1 species given new specific name.

Alophoixus:
    7 species only in Clements list.

Alopochen:
    1 species in IOC list.
    1 species given new specific name.

Amadina:
    2 species in IOC list.
    1 species given new common name.

Amalocichla:
    2 species in IOC list.
    2 species given new common names.

Amandava:
    3 species in IOC list.
    1 species reassigned to genus Sporaeginthus with new specific name.
    1 species reassigned to genus Sporaeginthus with new specific and common names.

Amaurocichla:
    1 species in IOC list.
    1 species given new specific and common names.

Amaurornis:
    7 species in IOC list.
    2 species only in Clements list.
    1 species given new common name.

Amazilia:
    32 species in IOC list.
    2 species not in Clements list.
    9 species reassigned to genus Agyrtria.
    7 species reassigned to genus Saucerottia.
    7 species reassigned to genus Polyerata.
    1 species reassigned to genus Saucerottia with new common name.

Amazon:
    2 species only in Clements list.

Amazona:
    32 species in IOC list.
    1 species not in Clements list.
    2 species reassigned to genus Amazon with new common names.
    29 species given new common names.

Amblyospiza:
    1 species in IOC list.
    1 species given new common name.

Ammodramus:
    7 species in IOC list.
    2 species only in Clements list.
    2 species given new common names.

Ammomanes:
    4 species in IOC list.
    1 species reassigned to genus Ammomanopsis.

Ammomanopsis:
    1 species only in Clements list.

Amphilais:
    1 species in IOC list.
    1 species reassigned to genus Dromaeocercus with new common name.

Amytornis:
    10 species in IOC list.
    1 species given new common name.

Anabazenops:
    2 species in IOC list.
    1 species given new common name.

Anairetes:
    6 species in IOC list.
    2 species only in Clements list.

Anaplectes:
    1 species in IOC list.
    1 species given new specific name.

Anas:
    44 species in IOC list.
    3 species not in Clements list.
    5 species only in Clements list.
    5 species given new common names.

Andigena:
    4 species in IOC list.
    4 species given new common names.

Andropadus:
    19 species in IOC list.
    7 species not in Clements list.
    6 species given new common names.

Anisognathus:
    5 species in IOC list.
    5 species given new common names.

Anomalospiza:
    1 species in IOC list.
    1 species given new common name.

Anorrhinus:
    2 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Anous:
    3 species in IOC list.
    1 species given new common name.

Anser:
    7 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Anthochaera:
    4 species in IOC list.
    2 species given new common names.

Anthoscopus:
    6 species in IOC list.
    6 species given new common names.

Anthracoceros:
    5 species in IOC list.
    2 species given new common names.

Anthracothorax:
    7 species in IOC list.
    1 species given new specific name.

Anthreptes:
    13 species in IOC list.
    5 species given new common names.

Anthus:
    45 species in IOC list.
    1 species not in Clements list.
    1 species reassigned to genus Hemimacronyx.
    8 species given new common names.

Anurolimnas:
    1 species in IOC list.
    2 species only in Clements list.

Anurophasis:
    1 species in IOC list.
    1 species given new common name.

Apalharpactes:
    2 species in IOC list.
    1 species reassigned to genus Harpactes.
    1 species reassigned to genus Harpactes with new common name.

Apalis:
    26 species in IOC list.
    5 species not in Clements list.
    3 species given new common names.

Apalopteron:
    1 species in IOC list.
    1 species given new common name.

Aphantochroa:
    1 species in IOC list.
    1 species reassigned to genus Campylopterus.

Aphelocoma:
    5 species in IOC list.
    3 species given new common names.

Aphrastura:
    2 species in IOC list.
    1 species given new common name.

Aplonis:
    25 species in IOC list.
    4 species not in Clements list.
    2 species given new common names.

Aprosmictus:
    2 species in IOC list.
    1 species given new common name.

Apteryx:
    5 species in IOC list.
    1 species given new common name.

Apus:
    17 species in IOC list.
    1 species not in Clements list.
    4 species given new common names.

Aquila:
    12 species in IOC list.
    6 species only in Clements list.
    2 species given new common names.

Arachnothera:
    10 species in IOC list.
    1 species given new common name.

Aramides:
    7 species in IOC list.
    7 species given new common names.

Aramidopsis:
    1 species in IOC list.
    1 species given new common name.

Aratinga:
    22 species in IOC list.
    1 species not in Clements list.
    3 species only in Clements list.
    2 species given new common names.

Arborophila:
    21 species in IOC list.
    4 species not in Clements list.
    1 species only in Clements list.
    3 species given new common names.

Arcanator:
    1 species only in Clements list.

Archboldia:
    1 species in IOC list.
    1 species only in Clements list.

Ardea:
    11 species in IOC list.
    1 species given new specific name.
    2 species given new common names.

Ardeola:
    6 species in IOC list.
    4 species given new common names.

Ardeotis:
    4 species in IOC list.
    1 species given new common name.

Arremon:
    7 species in IOC list.
    1 species given new common name.

Arses:
    4 species in IOC list.
    1 species given new common name.

Artamus:
    11 species in IOC list.
    2 species given new common names.

Artisornis:
    2 species in IOC list.
    2 species reassigned to genus Orthotomus with new common names.

Arundinicola:
    1 species in IOC list.
    1 species given new common name.

Asarcornis:
    1 species in IOC list.
    1 species reassigned to genus Cairina.

Ashbyia:
    1 species in IOC list.
    1 species given new common name.

Asio:
    6 species in IOC list.
    3 species given new common names.

Asthenes:
    24 species in IOC list.
    3 species given new common names.

Atalotriccus:
    1 species only in Clements list.

Atelornis:
    2 species in IOC list.
    2 species given new common names.

Athene:
    3 species in IOC list.
    1 species only in Clements list.

Atlantisia:
    1 species in IOC list.
    1 species given new common name.

Atlapetes:
    29 species in IOC list.
    2 species not in Clements list.
    27 species given new common names.

Atrichornis:
    2 species in IOC list.
    2 species given new common names.

Attila:
    7 species in IOC list.
    2 species given new common names.

Augastes:
    2 species in IOC list.
    1 species only in Clements list.

Aulacorhynchus:
    7 species in IOC list.
    1 species not in Clements list.
    6 species only in Clements list.

Automolus:
    8 species in IOC list.
    1 species given new common name.

Aythya:
    12 species in IOC list.
    2 species given new common names.

Baillonius:
    1 species only in Clements list.

Balearica:
    2 species in IOC list.
    2 species given new common names.

Bambusicola:
    2 species in IOC list.
    2 species given new common names.

Barnardius:
    1 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Basileuterus:
    25 species in IOC list.
    2 species not in Clements list.
    2 species only in Clements list.
    4 species given new common names.

Basilinna:
    2 species in IOC list.
    1 species reassigned to genus Hylocharis.
    1 species reassigned to genus Hylocharis with new common name.

Bathmocercus:
    3 species in IOC list.
    3 species given new common names.

Batis:
    16 species in IOC list.
    1 species only in Clements list.
    4 species given new common names.

Batrachostomus:
    9 species in IOC list.
    1 species given new common name.

Berenicornis:
    1 species in IOC list.
    1 species reassigned to genus Aceros.

Bernieria:
    1 species in IOC list.
    1 species reassigned to genus Phyllastrephus with new common name.

Bias:
    1 species in IOC list.
    1 species given new common name.

Bleda:
    4 species in IOC list.
    2 species given new common names.
    1 species given new specific and common names.

Bocagia:
    1 species in IOC list.
    1 species reassigned to genus Tchagra with new specific name.

Bonasa:
    1 species in IOC list.
    2 species only in Clements list.

Bostrychia:
    5 species in IOC list.
    1 species not in Clements list.

Botaurus:
    4 species in IOC list.
    1 species given new common name.

Brachypteracias:
    1 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Bradornis:
    5 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Bradypterus:
    22 species in IOC list.
    4 species not in Clements list.
    3 species only in Clements list.
    18 species given new common names.

Branta:
    6 species in IOC list.
    2 species given new common names.

Brotogeris:
    8 species in IOC list.
    1 species given new specific name.
    2 species given new common names.

Buarremon:
    4 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Bubalornis:
    2 species in IOC list.
    2 species given new common names.

Bubo:
    18 species in IOC list.
    1 species only in Clements list.
    1 species reassigned to genus Ketupa with new common name.
    2 species given new common names.

Bucanetes:
    2 species in IOC list.
    1 species reassigned to genus Rhodopechys.

Buceros:
    3 species in IOC list.
    1 species only in Clements list.

Bucorvus:
    2 species in IOC list.
    2 species given new common names.

Buettikoferella:
    1 species in IOC list.
    1 species given new common name.

Bugeranus:
    1 species only in Clements list.

Burhinus:
    7 species in IOC list.
    2 species only in Clements list.
    2 species given new common names.

Butastur:
    4 species in IOC list.
    1 species given new common name.

Buteo:
    27 species in IOC list.
    1 species not in Clements list.
    2 species only in Clements list.
    4 species given new common names.

Buteogallus:
    5 species in IOC list.
    1 species only in Clements list.
    4 species given new common names.

Buthraupis:
    4 species in IOC list.
    4 species given new common names.

Butorides:
    3 species in IOC list.
    1 species not in Clements list.
    1 species given new specific name.

Bycanistes:
    6 species in IOC list.
    5 species reassigned to genus Ceratogymna.
    1 species reassigned to genus Ceratogymna with new specific name.

Cacatua:
    12 species in IOC list.
    3 species given new common names.

Cacicus:
    11 species in IOC list.
    2 species not in Clements list.
    3 species given new common names.

Cacomantis:
    10 species in IOC list.
    2 species not in Clements list.
    1 species reassigned to genus Cuculus.
    1 species reassigned to genus Caliechthrus with new common name.

Cairina:
    1 species in IOC list.
    1 species only in Clements list.

Calamanthus:
    5 species in IOC list.
    1 species not in Clements list.
    2 species reassigned to genus Hylacola with new specific and common names.

Calamonastes:
    4 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Calandrella:
    10 species in IOC list.
    2 species not in Clements list.
    2 species given new common names.

Calendulauda:
    8 species only in Clements list.

Caliechthrus:
    1 species only in Clements list.

Callaeas:
    1 species in IOC list.
    1 species given new specific name.

Caloperdix:
    1 species in IOC list.
    1 species given new specific name.

Calothorax:
    2 species in IOC list.
    2 species given new common names.

Calyptorhynchus:
    5 species in IOC list.
    5 species given new common names.

Camarhynchus:
    6 species in IOC list.
    3 species given new common names.

Camaroptera:
    5 species in IOC list.
    2 species not in Clements list.

Campephaga:
    4 species in IOC list.
    2 species only in Clements list.
    4 species given new common names.

Campethera:
    12 species in IOC list.
    1 species given new common name.

Campochaera:
    1 species in IOC list.
    1 species given new common name.

Camptostoma:
    2 species in IOC list.
    2 species given new common names.

Campylopterus:
    12 species in IOC list.
    1 species only in Clements list.
    1 species reassigned to genus Phaeochroa.
    1 species given new common name.

Campylorhynchus:
    13 species in IOC list.
    2 species given new common names.

Canirallus:
    2 species in IOC list.
    1 species given new common name.

Caprimulgus:
    55 species in IOC list.
    4 species only in Clements list.
    8 species given new common names.

Caracara:
    2 species in IOC list.
    2 species given new common names.

Carduelis:
    33 species in IOC list.
    1 species only in Clements list.
    1 species reassigned to genus Serinus.
    1 species reassigned to genus Serinus with new specific name.
    3 species given new common names.

Caridonax:
    1 species in IOC list.
    1 species given new common name.

Carpococcyx:
    3 species in IOC list.
    2 species given new common names.
    1 species given new specific and common names.

Carpodacus:
    21 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    2 species given new specific names.
    3 species given new common names.

Catamblyrhynchus:
    1 species in IOC list.
    1 species given new common name.

Catharus:
    12 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Catoptrophorus:
    1 species in IOC list.
    1 species reassigned to genus Tringa with new specific name.

Cecropis:
    8 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Celeus:
    12 species in IOC list.
    1 species not in Clements list.

Centrocercus:
    2 species in IOC list.
    2 species given new common names.

Centropus:
    30 species in IOC list.
    2 species not in Clements list.
    4 species given new common names.

Cerasophila:
    1 species in IOC list.
    1 species reassigned to genus Hypsipetes.

Ceratogymna:
    2 species in IOC list.
    6 species only in Clements list.
    2 species given new common names.

Cercomacra:
    12 species in IOC list.
    2 species given new common names.

Cercomela:
    9 species in IOC list.
    4 species given new common names.

Cercotrichas:
    10 species in IOC list.
    1 species only in Clements list.
    10 species given new common names.

Certhilauda:
    10 species in IOC list.
    2 species reassigned to genus Calendulauda.
    2 species reassigned to genus Calendulauda with new common names.
    3 species given new common names.

Cettia:
    15 species in IOC list.
    1 species not in Clements list.
    2 species only in Clements list.
    13 species given new common names.

Ceuthmochares:
    1 species in IOC list.
    1 species given new common name.

Ceyx:
    4 species in IOC list.
    1 species only in Clements list.
    3 species given new common names.
    1 species given new specific and common names.

Chaetops:
    2 species in IOC list.
    1 species only in Clements list.
    2 species given new common names.

Chaetorhynchus:
    1 species in IOC list.
    1 species given new common name.

Chaetura:
    12 species in IOC list.
    1 species not in Clements list.
    1 species given new specific name.
    1 species given new common name.

Chalcophaps:
    2 species in IOC list.
    2 species given new common names.

Chalcopsitta:
    4 species in IOC list.
    1 species given new common name.

Chamaethlypis:
    1 species in IOC list.
    1 species reassigned to genus Geothlypis with new common name.

Chamaeza:
    6 species in IOC list.
    2 species given new common names.

Charadrius:
    32 species in IOC list.
    1 species not in Clements list.
    1 species reassigned to genus Peltohyas with new common name.
    6 species given new common names.

Chelidoptera:
    1 species in IOC list.
    1 species given new common name.

Chen:
    3 species in IOC list.
    1 species given new common name.

Cheramoeca:
    1 species in IOC list.
    1 species given new specific name.

Chersomanes:
    1 species in IOC list.
    1 species only in Clements list.

Chionis:
    2 species in IOC list.
    1 species given new specific name.

Chlamydochaera:
    1 species in IOC list.
    1 species given new common name.

Chlidonias:
    3 species in IOC list.
    1 species only in Clements list.
    1 species given new specific name.

Chloebia:
    1 species only in Clements list.

Chlorestes:
    1 species in IOC list.
    1 species reassigned to genus Chlorostilbon.

Chlorocharis:
    1 species in IOC list.
    1 species given new common name.

Chlorocichla:
    6 species in IOC list.
    2 species given new common names.

Chloropeta:
    3 species in IOC list.
    1 species given new common name.

Chlorophoneus:
    9 species in IOC list.
    1 species not in Clements list.
    4 species reassigned to genus Telophorus.
    3 species reassigned to genus Telophorus with new common names.
    1 species reassigned to genus Telophorus with new specific name.

Chlorospingus:
    9 species in IOC list.
    9 species given new common names.

Chlorostilbon:
    17 species in IOC list.
    3 species not in Clements list.
    1 species only in Clements list.
    1 species given new common name.

Chlorothraupis:
    4 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Chondrohierax:
    2 species in IOC list.
    1 species not in Clements list.

Chrysococcyx:
    14 species in IOC list.
    1 species not in Clements list.
    1 species reassigned to genus Rhamphomantis.
    6 species given new common names.

Chrysocolaptes:
    2 species in IOC list.
    1 species given new common name.

Chrysolampis:
    1 species in IOC list.
    1 species given new common name.

Chrysomma:
    1 species in IOC list.
    2 species only in Clements list.

Chrysomos:
    2 species only in Clements list.

Chrysomus:
    2 species in IOC list.
    2 species reassigned to genus Chrysomos.

Chrysoptilus:
    3 species in IOC list.
    3 species reassigned to genus Colaptes.

Chrysothlypis:
    1 species in IOC list.
    1 species only in Clements list.

Chthonicola:
    1 species only in Clements list.

Ciccaba:
    4 species only in Clements list.

Cichladusa:
    3 species in IOC list.
    3 species given new common names.

Cicinnurus:
    1 species in IOC list.
    2 species only in Clements list.

Cinclidium:
    1 species in IOC list.
    2 species only in Clements list.

Cinclocerthia:
    2 species in IOC list.
    1 species given new common name.

Cinclodes:
    13 species in IOC list.
    2 species given new common names.

Cinclosoma:
    5 species in IOC list.
    1 species given new common name.

Cinnycerthia:
    4 species in IOC list.
    1 species given new common name.

Cinnyricinclus:
    2 species in IOC list.
    1 species reassigned to genus Pholia.

Cinnyris:
    51 species in IOC list.
    1 species not in Clements list.
    1 species given new specific name.
    9 species given new common names.

Circaetus:
    6 species in IOC list.
    6 species given new common names.

Circus:
    13 species in IOC list.
    4 species given new common names.

Cissa:
    3 species in IOC list.
    3 species given new common names.

Cissopis:
    1 species in IOC list.
    1 species given new specific name.

Cisticola:
    52 species in IOC list.
    7 species not in Clements list.
    1 species given new specific name.
    12 species given new common names.

Cistothorus:
    4 species in IOC list.
    1 species given new common name.

Clamator:
    4 species in IOC list.
    1 species given new common name.

Claravis:
    3 species in IOC list.
    3 species given new common names.

Clycopsitta:
    2 species only in Clements list.

Clypicterus:
    1 species in IOC list.
    1 species reassigned to genus Psarocolius.

Cnemarchus:
    1 species in IOC list.
    1 species given new common name.

Cnemophilus:
    2 species in IOC list.
    2 species given new common names.

Cnemoscopus:
    1 species in IOC list.
    1 species given new common name.

Cnipodectes:
    1 species in IOC list.
    1 species given new common name.

Coccothraustes:
    1 species in IOC list.
    2 species only in Clements list.

Coccycua:
    3 species in IOC list.
    1 species reassigned to genus Piaya.
    2 species reassigned to genus Coccyzus with new specific names.

Coccyzus:
    13 species in IOC list.
    2 species only in Clements list.
    6 species given new common names.

Cocopygia:
    2 species only in Clements list.

Coeligena:
    12 species in IOC list.
    1 species given new common name.

Coenocorypha:
    2 species in IOC list.
    2 species given new common names.

Colaptes:
    6 species in IOC list.
    3 species only in Clements list.

Colibri:
    4 species in IOC list.
    4 species given new common names.

Colinus:
    4 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Colluricincla:
    7 species in IOC list.
    6 species given new common names.

Columba:
    33 species in IOC list.
    1 species only in Clements list.
    18 species given new common names.

Columbina:
    7 species in IOC list.
    2 species only in Clements list.
    7 species given new common names.

Compsospiza:
    2 species in IOC list.
    2 species reassigned to genus Poospiza with new common names.

Conopophaga:
    9 species in IOC list.
    1 species not in Clements list.

Conopophila:
    3 species in IOC list.
    1 species given new common name.

Contopus:
    15 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Copsychus:
    8 species in IOC list.
    1 species not in Clements list.

Coracias:
    8 species in IOC list.
    1 species given new common name.

Coracina:
    55 species in IOC list.
    7 species not in Clements list.
    48 species given new common names.

Coracopsis:
    2 species in IOC list.
    2 species given new common names.

Corapipo:
    3 species in IOC list.
    1 species not in Clements list.

Corvinella:
    1 species in IOC list.
    1 species only in Clements list.

Corvus:
    45 species in IOC list.
    3 species not in Clements list.
    1 species only in Clements list.
    1 species given new specific name.
    4 species given new common names.

Coryphospingus:
    2 species in IOC list.
    2 species given new common names.

Corythaixoides:
    3 species in IOC list.
    1 species given new common name.

Cossypha:
    14 species in IOC list.
    5 species given new common names.

Coturnicops:
    3 species in IOC list.
    1 species given new specific and common names.

Coturnix:
    8 species in IOC list.
    1 species given new common name.

Cracticus:
    7 species in IOC list.
    1 species given new common name.

Cranioleuca:
    21 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Crateroscelis:
    3 species in IOC list.
    3 species given new common names.

Crax:
    7 species in IOC list.
    1 species given new common name.

Crecopsis:
    1 species only in Clements list.

Crex:
    2 species in IOC list.
    1 species reassigned to genus Crecopsis.

Criniger:
    11 species in IOC list.
    5 species reassigned to genus Alophoixus.
    1 species reassigned to genus Alophoixus with new common name.
    2 species given new common names.

Crithagra:
    37 species in IOC list.
    1 species not in Clements list.
    2 species reassigned to genus Pseudochloroptila.
    1 species reassigned to genus Carduelis.
    15 species reassigned to genus Serinus.
    1 species reassigned to genus Alario.
    3 species reassigned to genus Serinus with new common names.
    10 species reassigned to genus Serinus with new specific names.
    4 species reassigned to genus Serinus with new specific and common names.

Crocias:
    2 species in IOC list.
    1 species given new common name.

Crossleyia:
    1 species in IOC list.
    1 species given new common name.

Crossoptilon:
    4 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Cryptillas:
    1 species in IOC list.
    1 species reassigned to genus Bradypterus with new common name.

Cryptospiza:
    4 species in IOC list.
    4 species given new common names.

Crypturellus:
    22 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Cuculus:
    9 species in IOC list.
    10 species only in Clements list.
    2 species given new common names.

Culicicapa:
    2 species in IOC list.
    2 species given new common names.

Culicivora:
    1 species in IOC list.
    1 species given new common name.

Curaeus:
    2 species in IOC list.
    1 species given new common name.

Cursorius:
    5 species in IOC list.
    1 species not in Clements list.

Cyanistes:
    2 species in IOC list.
    2 species only in Clements list.
    1 species given new common name.

Cyanochen:
    1 species in IOC list.
    1 species given new specific name.

Cyanocorax:
    18 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Cyanomitra:
    8 species in IOC list.
    3 species given new common names.

Cyanopica:
    2 species in IOC list.
    1 species not in Clements list.

Cyanoramphus:
    5 species in IOC list.
    2 species only in Clements list.
    3 species given new common names.

Cyclopsitta:
    2 species in IOC list.
    1 species reassigned to genus Clycopsitta with new common name.
    1 species reassigned to genus Clycopsitta with new specific and common names.

Cygnus:
    6 species in IOC list.
    1 species given new specific name.

Cynanthus:
    3 species in IOC list.
    1 species not in Clements list.

Cyornis:
    21 species in IOC list.
    2 species not in Clements list.
    17 species given new common names.
    1 species given new specific and common names.

Cypseloides:
    10 species in IOC list.
    1 species reassigned to genus Streptoprocne with new specific name.
    1 species given new common name.

Cypsiurus:
    2 species in IOC list.
    2 species given new common names.

Dacnis:
    10 species in IOC list.
    1 species not in Clements list.
    1 species reassigned to genus Pseudodacnis with new common name.

Daphoenositta:
    3 species in IOC list.
    1 species not in Clements list.
    2 species reassigned to genus Neositta.

Dasylophus:
    2 species in IOC list.
    1 species reassigned to genus Phaenicophaeus.
    1 species reassigned to genus Phaenicophaeus with new common name.

Deleornis:
    2 species in IOC list.
    2 species given new common names.

Delichon:
    3 species in IOC list.
    3 species given new common names.

Delothraupis:
    1 species in IOC list.
    1 species given new common name.

Dendragapus:
    1 species in IOC list.
    2 species only in Clements list.
    1 species given new common name.

Dendrocincla:
    6 species in IOC list.
    1 species given new common name.

Dendrocitta:
    7 species in IOC list.
    1 species given new common name.

Dendrocolaptes:
    5 species in IOC list.
    1 species given new common name.

Dendrocopos:
    22 species in IOC list.
    1 species not in Clements list.
    5 species given new common names.

Dendrocygna:
    8 species in IOC list.
    8 species given new common names.

Dendroica:
    30 species in IOC list.
    1 species not in Clements list.
    5 species given new common names.

Dendroperdix:
    1 species in IOC list.
    1 species reassigned to genus Francolinus.

Dendropicos:
    12 species in IOC list.
    3 species only in Clements list.
    3 species given new common names.

Dendroplex:
    2 species only in Clements list.

Dendrortyx:
    3 species in IOC list.
    3 species given new common names.

Dicaeum:
    39 species in IOC list.
    1 species not in Clements list.
    1 species given new specific name.
    7 species given new common names.

Dichrozona:
    1 species in IOC list.
    1 species given new common name.

Dicrurus:
    21 species in IOC list.
    2 species only in Clements list.
    1 species given new common name.

Diglossa:
    14 species in IOC list.
    1 species given new common name.

Diglossopis:
    4 species in IOC list.
    1 species given new specific name.
    1 species given new specific and common names.

Dinemellia:
    1 species in IOC list.
    1 species given new common name.

Dinopium:
    4 species in IOC list.
    3 species given new common names.

Dioptrornis:
    3 species in IOC list.
    3 species reassigned to genus Melaenornis with new common names.

Diphyllodes:
    2 species in IOC list.
    2 species reassigned to genus Cicinnurus.

Discosura:
    1 species in IOC list.
    1 species only in Clements list.
    1 species given new specific name.

Diuca:
    2 species in IOC list.
    2 species given new common names.

Dives:
    3 species in IOC list.
    1 species given new specific name.

Dixiphia:
    1 species only in Clements list.

Donacospiza:
    1 species in IOC list.
    1 species given new common name.

Dramas:
    1 species only in Clements list.

Drepanornis:
    2 species in IOC list.
    2 species reassigned to genus Epimachus.

Dreptes:
    1 species in IOC list.
    1 species given new common name.

Dromaeocercus:
    1 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Dromas:
    1 species in IOC list.
    1 species reassigned to genus Dramas with new common name.

Drymocichla:
    1 species in IOC list.
    1 species given new common name.

Drymodes:
    2 species in IOC list.
    2 species given new common names.

Dryoscopus:
    6 species in IOC list.
    1 species given new common name.

Dryotriorchis:
    1 species in IOC list.
    1 species given new common name.

Dubusia:
    1 species in IOC list.
    1 species given new common name.

Ducula:
    36 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    35 species given new common names.

Dumetella:
    1 species in IOC list.
    1 species given new common name.

Dupetor:
    1 species in IOC list.
    1 species reassigned to genus Ixobrychus.

Dyaphorophyia:
    6 species in IOC list.
    6 species reassigned to genus Platysteira.

Dysithamnus:
    9 species in IOC list.
    1 species not in Clements list.

Egretta:
    14 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Elanus:
    4 species in IOC list.
    2 species given new common names.

Elaphrornis:
    1 species in IOC list.
    1 species reassigned to genus Bradypterus with new common name.

Elminia:
    2 species in IOC list.
    3 species only in Clements list.
    2 species given new common names.

Emberiza:
    40 species in IOC list.
    8 species given new common names.

Emberizoides:
    3 species in IOC list.
    3 species given new common names.

Embernagra:
    2 species in IOC list.
    2 species given new common names.

Emblema:
    1 species in IOC list.
    1 species given new common name.

Eminia:
    1 species in IOC list.
    1 species given new common name.

Empidonax:
    15 species in IOC list.
    2 species given new common names.

Enodes:
    1 species in IOC list.
    1 species given new common name.

Eopsaltria:
    4 species in IOC list.
    1 species only in Clements list.
    2 species given new common names.

Eos:
    6 species in IOC list.
    1 species given new specific name.

Epimachus:
    2 species in IOC list.
    2 species only in Clements list.

Eremalauda:
    2 species in IOC list.
    1 species reassigned to genus Spizocorys.

Eremiornis:
    1 species in IOC list.
    1 species given new common name.

Eremobius:
    1 species in IOC list.
    1 species given new common name.

Eremomela:
    11 species in IOC list.
    2 species given new common names.

Eremopterix:
    7 species in IOC list.
    1 species given new common name.

Erpornis:
    1 species in IOC list.
    1 species reassigned to genus Yuhina.

Erythrocercus:
    3 species in IOC list.
    1 species given new common name.

Erythrothlypis:
    1 species in IOC list.
    1 species reassigned to genus Chrysothlypis.

Erythrura:
    11 species in IOC list.
    2 species only in Clements list.
    1 species reassigned to genus Chloebia.
    10 species given new common names.

Esacus:
    2 species in IOC list.
    1 species reassigned to genus Burhinus with new common name.
    1 species reassigned to genus Burhinus with new specific and common names.

Estrilda:
    18 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    2 species reassigned to genus Cocopygia.
    4 species given new common names.

Euaegotheles:
    3 species in IOC list.
    3 species reassigned to genus Aegotheles.

Eucometis:
    1 species in IOC list.
    1 species given new common name.

Eudocimus:
    2 species in IOC list.
    1 species given new common name.

Eudynamys:
    3 species in IOC list.
    1 species only in Clements list.
    1 species given new specific and common names.

Eudyptula:
    1 species in IOC list.
    1 species given new common name.

Eulipoa:
    1 species in IOC list.
    1 species reassigned to genus Megapodius with new common name.

Eumyias:
    5 species in IOC list.
    1 species given new common name.

Euodice:
    2 species only in Clements list.

Eupetomena:
    1 species in IOC list.
    1 species given new specific name.

Eupherusa:
    4 species in IOC list.
    1 species given new common name.

Euphonia:
    28 species in IOC list.
    1 species not in Clements list.

Euplectes:
    17 species in IOC list.
    6 species given new common names.

Eupodotis:
    6 species in IOC list.
    1 species not in Clements list.
    5 species only in Clements list.
    3 species given new common names.

Eurocephalus:
    2 species in IOC list.
    2 species given new common names.

Eurostopodus:
    7 species in IOC list.
    4 species given new common names.

Euryptila:
    1 species in IOC list.
    1 species given new common name.

Eurystomus:
    4 species in IOC list.
    2 species given new common names.

Euscarthmus:
    2 species in IOC list.
    2 species given new common names.

Eutrichomyias:
    1 species in IOC list.
    1 species given new common name.

Eutriorchis:
    1 species in IOC list.
    1 species given new common name.

Falcipennis:
    2 species in IOC list.
    1 species reassigned to genus Dendragapus.

Falco:
    38 species in IOC list.
    1 species given new specific name.
    5 species given new common names.

Falcunculus:
    3 species in IOC list.
    2 species not in Clements list.
    1 species given new common name.

Ficedula:
    32 species in IOC list.
    4 species given new common names.
    1 species given new specific and common names.

Finschia:
    1 species in IOC list.
    1 species reassigned to genus Mohoua.

Florisuga:
    2 species in IOC list.
    1 species given new specific name.

Fluvicola:
    3 species in IOC list.
    3 species given new common names.

Formicarius:
    7 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Formicivora:
    8 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    1 species reassigned to genus Neorhopias.
    1 species given new common name.

Foudia:
    7 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Francolinus:
    5 species in IOC list.
    36 species only in Clements list.
    1 species given new common name.

Fraseria:
    2 species in IOC list.
    2 species given new common names.

Fregata:
    5 species in IOC list.
    2 species given new common names.

Fregetta:
    2 species in IOC list.
    2 species given new common names.

Fringilla:
    3 species in IOC list.
    1 species given new common name.

Fulica:
    11 species in IOC list.
    1 species given new common name.

Furnarius:
    8 species in IOC list.
    2 species not in Clements list.
    1 species given new common name.

Galbula:
    10 species in IOC list.
    1 species given new common name.

Galerida:
    6 species in IOC list.
    1 species given new common name.

Gallicolumba:
    18 species in IOC list.
    1 species given new specific name.
    13 species given new common names.

Gallinago:
    17 species in IOC list.
    1 species given new common name.

Gallinula:
    8 species in IOC list.
    4 species given new common names.

Gallirallus:
    11 species in IOC list.
    2 species given new common names.

Galloperdix:
    3 species in IOC list.
    1 species given new common name.

Gallus:
    4 species in IOC list.
    2 species given new common names.

Garritornis:
    1 species in IOC list.
    1 species reassigned to genus Pomatostomus with new common name.

Garrodia:
    1 species in IOC list.
    1 species given new common name.

Garrulax:
    51 species in IOC list.
    1 species only in Clements list.
    8 species given new common names.

Gavia:
    5 species in IOC list.
    2 species given new common names.

Gelochelidon:
    1 species only in Clements list.

Geobiastes:
    1 species in IOC list.
    1 species reassigned to genus Brachypteracias with new specific and common names.

Geophaps:
    3 species in IOC list.
    1 species only in Clements list.

Geopsittacus:
    1 species only in Clements list.

Geositta:
    10 species in IOC list.
    1 species given new common name.

Geospiza:
    6 species in IOC list.
    6 species given new common names.

Geothlypis:
    11 species in IOC list.
    3 species not in Clements list.
    1 species only in Clements list.

Geotrygon:
    18 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Geronticus:
    2 species in IOC list.
    2 species given new common names.

Gerygone:
    18 species in IOC list.
    1 species only in Clements list.
    5 species given new common names.

Glareola:
    7 species in IOC list.
    1 species given new common name.

Glaucidium:
    28 species in IOC list.
    4 species only in Clements list.
    19 species given new common names.
    1 species given new specific and common names.

Glaucis:
    3 species in IOC list.
    1 species given new specific name.

Glycichaera:
    1 species only in Clements list.

Glycifohia:
    2 species in IOC list.
    1 species reassigned to genus Phylidonyris with new common name.
    1 species reassigned to genus Phylidonyris with new specific name.

Glyciphila:
    1 species in IOC list.
    1 species reassigned to genus Phylidonyris.

Goethalsia:
    1 species in IOC list.
    1 species given new common name.

Gorsachius:
    4 species in IOC list.
    4 species given new common names.

Goura:
    3 species in IOC list.
    3 species given new common names.

Gracula:
    5 species in IOC list.
    3 species given new common names.

Gracupica:
    2 species only in Clements list.

Grallaria:
    31 species in IOC list.
    2 species given new common names.

Grallaricula:
    9 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Grallina:
    2 species in IOC list.
    2 species given new common names.

Granatellus:
    3 species in IOC list.
    1 species given new common name.

Grus:
    11 species in IOC list.
    1 species reassigned to genus Bugeranus with new specific name.

Gygis:
    1 species in IOC list.
    1 species given new common name.

Gymnobucco:
    4 species in IOC list.
    1 species given new common name.

Gymnocrex:
    3 species in IOC list.
    1 species given new common name.

Gymnomyza:
    3 species in IOC list.
    1 species given new common name.

Gymnophaps:
    3 species in IOC list.
    3 species given new common names.

Gymnorhina:
    1 species in IOC list.
    1 species given new common name.

Gymnoris:
    4 species in IOC list.
    3 species reassigned to genus Petronia.
    1 species reassigned to genus Petronia with new common name.

Gymnostinops:
    3 species only in Clements list.

Gypaetus:
    1 species in IOC list.
    1 species given new common name.

Gyps:
    8 species in IOC list.
    4 species given new common names.

Habia:
    5 species in IOC list.
    5 species given new common names.

Haematopus:
    10 species in IOC list.
    1 species only in Clements list.

Halcyon:
    11 species in IOC list.
    1 species given new common name.

Haliaeetus:
    8 species in IOC list.
    6 species given new common names.

Hamirostra:
    1 species in IOC list.
    1 species given new common name.

Hapalopsittaca:
    4 species in IOC list.
    1 species given new common name.

Harpactes:
    10 species in IOC list.
    2 species only in Clements list.

Harpyhaliaetus:
    2 species in IOC list.
    2 species given new common names.

Harpyopsis:
    1 species in IOC list.
    1 species given new common name.

Heleia:
    2 species in IOC list.
    2 species given new common names.

Heliangelus:
    9 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Heliolais:
    1 species in IOC list.
    1 species reassigned to genus Prinia with new specific and common names.

Hemicircus:
    2 species in IOC list.
    1 species given new common name.

Hemignathus:
    7 species in IOC list.
    1 species not in Clements list.

Hemimacronyx:
    2 species only in Clements list.

Hemiprocne:
    4 species in IOC list.
    1 species given new common name.

Hemispingus:
    15 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Hemitriccus:
    21 species in IOC list.
    4 species given new common names.

Henicopernis:
    2 species in IOC list.
    2 species given new common names.

Henicorhina:
    4 species in IOC list.
    4 species given new common names.

Herpsilochmus:
    15 species in IOC list.
    1 species given new common name.

Hesperiphona:
    2 species in IOC list.
    1 species reassigned to genus Coccothraustes.
    1 species reassigned to genus Coccothraustes with new specific name.

Heteroglaux:
    1 species in IOC list.
    1 species reassigned to genus Athene.

Heteromyias:
    1 species only in Clements list.

Heterophasia:
    8 species in IOC list.
    2 species given new common names.

Heteroscelus:
    2 species in IOC list.
    1 species reassigned to genus Tringa with new common name.
    1 species reassigned to genus Tringa with new specific name.

Heteroxolmis:
    1 species in IOC list.
    1 species reassigned to genus Xolmis with new specific name.

Hieraaetus:
    6 species in IOC list.
    3 species reassigned to genus Aquila.
    1 species reassigned to genus Aquila with new common name.
    2 species reassigned to genus Aquila with new specific names.

Hierococcyx:
    7 species in IOC list.
    5 species reassigned to genus Cuculus.
    1 species reassigned to genus Cuculus with new common name.
    1 species reassigned to genus Cuculus with new specific name.

Himantopus:
    5 species in IOC list.
    1 species given new common name.

Hippolais:
    8 species in IOC list.
    1 species given new common name.

Hirundo:
    14 species in IOC list.
    1 species given new common name.

Hoploxypterus:
    1 species in IOC list.
    1 species reassigned to genus Vanellus with new common name.

Humblotia:
    1 species in IOC list.
    1 species given new common name.

Hydrobates:
    1 species in IOC list.
    1 species given new common name.

Hydrochous:
    1 species in IOC list.
    1 species given new common name.

Hydroprogne:
    1 species only in Clements list.

Hylacola:
    2 species only in Clements list.

Hylexetastes:
    3 species in IOC list.
    1 species only in Clements list.

Hylocharis:
    6 species in IOC list.
    2 species only in Clements list.
    2 species given new common names.

Hylocichla:
    1 species in IOC list.
    1 species reassigned to genus Catharus.

Hylocitrea:
    1 species in IOC list.
    1 species given new common name.

Hylocryptus:
    2 species in IOC list.
    1 species given new common name.

Hyloctistes:
    2 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Hylopezus:
    8 species in IOC list.
    1 species given new common name.

Hylophilus:
    15 species in IOC list.
    2 species given new common names.

Hypargos:
    2 species in IOC list.
    1 species given new common name.

Hypnelus:
    1 species in IOC list.
    1 species only in Clements list.

Hypocryptadius:
    1 species in IOC list.
    1 species given new common name.

Hypositta:
    1 species in IOC list.
    1 species given new common name.

Hypothymis:
    3 species in IOC list.
    1 species only in Clements list.

Hypsipetes:
    6 species in IOC list.
    2 species only in Clements list.
    2 species given new common names.

Ichthyophaga:
    2 species in IOC list.
    2 species given new common names.

Icterus:
    30 species in IOC list.
    1 species given new common name.

Ifrita:
    1 species in IOC list.
    1 species given new common name.

Incana:
    1 species in IOC list.
    1 species given new specific name.

Incaspiza:
    5 species in IOC list.
    5 species given new common names.

Indicator:
    11 species in IOC list.
    1 species given new common name.

Inezia:
    4 species in IOC list.
    4 species given new common names.

Iole:
    4 species in IOC list.
    1 species only in Clements list.
    1 species reassigned to genus Ixos.
    1 species given new common name.

Ispidina:
    3 species in IOC list.
    3 species given new common names.

Ixobrychus:
    8 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    1 species given new specific name.
    1 species given new common name.

Ixos:
    8 species in IOC list.
    2 species only in Clements list.
    1 species reassigned to genus Hypsipetes with new specific name.

Jabouilleia:
    1 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Jynx:
    2 species in IOC list.
    1 species given new common name.

Kakamega:
    1 species in IOC list.
    1 species given new common name.

Ketupa:
    3 species in IOC list.
    1 species only in Clements list.
    3 species given new common names.

Knipolegus:
    11 species in IOC list.
    7 species given new common names.

Kozlowia:
    1 species in IOC list.
    1 species reassigned to genus Carpodacus.

Kupeornis:
    3 species in IOC list.
    3 species given new common names.

Lagonosticta:
    12 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Lampornis:
    8 species in IOC list.
    8 species given new common names.

Lamprotornis:
    23 species in IOC list.
    1 species not in Clements list.
    1 species reassigned to genus Spreo.
    15 species given new common names.

Laniarius:
    18 species in IOC list.
    6 species given new common names.

Laniisoma:
    2 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Lanius:
    27 species in IOC list.
    1 species not in Clements list.
    10 species given new common names.

Larus:
    45 species in IOC list.
    5 species only in Clements list.
    8 species given new common names.

Laterallus:
    12 species in IOC list.
    2 species reassigned to genus Anurolimnas.
    3 species given new common names.

Lathrotriccus:
    2 species in IOC list.
    1 species given new common name.

Leiothrix:
    2 species in IOC list.
    1 species given new common name.

Lemuresthes:
    1 species in IOC list.
    1 species reassigned to genus Lonchura with new common name.

Leonardina:
    1 species in IOC list.
    1 species reassigned to genus Trichastoma.

Lepidothrix:
    8 species in IOC list.
    1 species given new common name.

Leptasthenura:
    10 species in IOC list.
    1 species given new common name.

Leptodon:
    2 species in IOC list.
    1 species given new common name.

Leptopoecile:
    2 species in IOC list.
    2 species given new common names.

Leptopterus:
    1 species in IOC list.
    1 species given new common name.

Leptosomus:
    1 species in IOC list.
    1 species given new common name.

Leptotila:
    11 species in IOC list.
    5 species given new common names.

Lessonia:
    2 species in IOC list.
    1 species given new common name.

Leucippus:
    6 species in IOC list.
    1 species only in Clements list.

Leucocarbo:
    21 species in IOC list.
    1 species not in Clements list.
    11 species reassigned to genus Phalacrocorax.
    8 species reassigned to genus Phalacrocorax with new common names.
    1 species reassigned to genus Phalacrocorax with new specific name.

Leuconerpes:
    1 species in IOC list.
    1 species reassigned to genus Melanerpes.

Leucophaeus:
    1 species in IOC list.
    1 species reassigned to genus Larus.

Leucopternis:
    10 species in IOC list.
    1 species given new common name.

Leucosticte:
    7 species in IOC list.
    7 species given new common names.

Lewinia:
    3 species in IOC list.
    1 species reassigned to genus Rallus.
    1 species reassigned to genus Rallus with new specific and common names.
    1 species given new common name.

Lichenostomus:
    21 species in IOC list.
    1 species reassigned to genus Meliphaga with new specific name.
    2 species given new common names.

Lichmera:
    10 species in IOC list.
    1 species only in Clements list.
    5 species given new common names.

Limnoctites:
    1 species in IOC list.
    1 species reassigned to genus Limnornis.

Limnornis:
    1 species in IOC list.
    1 species only in Clements list.

Liocichla:
    3 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Loboparadisea:
    1 species in IOC list.
    1 species given new common name.

Lobotos:
    2 species in IOC list.
    2 species reassigned to genus Campephaga with new specific and common names.

Locustella:
    9 species in IOC list.
    1 species only in Clements list.
    1 species reassigned to genus Megalurus.
    6 species given new common names.

Lonchura:
    36 species in IOC list.
    2 species not in Clements list.
    4 species only in Clements list.
    2 species reassigned to genus Spermestes.
    1 species reassigned to genus Euodice.
    2 species reassigned to genus Padda.
    1 species reassigned to genus Odontospiza with new common name.
    1 species reassigned to genus Euodice with new common name.
    1 species reassigned to genus Spermestes with new specific name.
    8 species given new common names.

Lophonetta:
    1 species in IOC list.
    1 species reassigned to genus Anas.

Lophophanes:
    2 species in IOC list.
    2 species given new common names.

Lophophorus:
    3 species in IOC list.
    1 species given new common name.

Lophospingus:
    2 species in IOC list.
    1 species given new common name.

Lophotis:
    3 species in IOC list.
    2 species reassigned to genus Eupodotis.
    1 species reassigned to genus Eupodotis with new common name.

Lophotriccus:
    5 species in IOC list.
    1 species reassigned to genus Atalotriccus with new common name.
    4 species given new common names.

Lophozosterops:
    6 species in IOC list.
    6 species given new common names.

Lophura:
    11 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    2 species given new common names.

Loriculus:
    12 species in IOC list.
    2 species only in Clements list.
    12 species given new common names.

Loxia:
    5 species in IOC list.
    1 species given new common name.

Lullula:
    1 species in IOC list.
    1 species given new common name.

Luscinia:
    11 species in IOC list.
    1 species given new common name.

Lyrurus:
    2 species in IOC list.
    2 species reassigned to genus Tetrao.

Macgregoria:
    1 species in IOC list.
    1 species given new common name.

Macholophus:
    1 species only in Clements list.

Macroagelaius:
    2 species in IOC list.
    2 species given new common names.

Macronectes:
    2 species in IOC list.
    2 species given new common names.

Macronous:
    5 species in IOC list.
    2 species given new common names.

Macronyx:
    8 species in IOC list.
    1 species reassigned to genus Hemimacronyx.
    2 species given new common names.

Macropygia:
    7 species in IOC list.
    3 species only in Clements list.
    3 species given new common names.

Macrosphenus:
    5 species in IOC list.
    1 species given new common name.

Madanga:
    1 species in IOC list.
    1 species given new common name.

Malacocincla:
    5 species in IOC list.
    1 species not in Clements list.

Malaconotus:
    6 species in IOC list.
    1 species given new common name.

Malacopteron:
    6 species in IOC list.
    2 species given new common names.

Malimbus:
    10 species in IOC list.
    3 species given new common names.

Malurus:
    13 species in IOC list.
    1 species not in Clements list.

Mandingoa:
    1 species in IOC list.
    1 species given new common name.

Manorina:
    4 species in IOC list.
    1 species given new common name.

Manucodia:
    4 species in IOC list.
    1 species only in Clements list.
    1 species given new specific name.

Margaroperdix:
    1 species in IOC list.
    1 species given new specific name.

Margarornis:
    4 species in IOC list.
    1 species given new common name.

Marmaronetta:
    1 species in IOC list.
    1 species given new common name.

Mayrornis:
    3 species in IOC list.
    1 species given new common name.

Mearnsia:
    2 species in IOC list.
    2 species given new common names.

Megabyas:
    1 species in IOC list.
    1 species given new common name.

Megaceryle:
    4 species in IOC list.
    2 species given new specific names.

Megacrex:
    1 species in IOC list.
    1 species given new common name.

Megalaima:
    24 species in IOC list.
    1 species given new specific name.
    1 species given new common name.

Megalurulus:
    5 species in IOC list.
    1 species only in Clements list.
    1 species reassigned to genus Trichocichla with new specific and common names.
    3 species given new common names.

Megalurus:
    7 species in IOC list.
    2 species not in Clements list.
    1 species only in Clements list.
    1 species given new common name.

Megapodius:
    13 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    10 species given new common names.
    2 species given new specific and common names.

Megascops:
    23 species in IOC list.
    1 species not in Clements list.
    3 species only in Clements list.
    1 species reassigned to genus Otus.
    21 species given new common names.

Melaenornis:
    4 species in IOC list.
    3 species only in Clements list.
    4 species given new common names.

Melanerpes:
    22 species in IOC list.
    1 species only in Clements list.
    2 species given new common names.

Melaniparus:
    14 species only in Clements list.

Melanitta:
    5 species in IOC list.
    2 species not in Clements list.
    1 species given new common name.

Melanocharis:
    5 species in IOC list.
    1 species only in Clements list.

Melanodera:
    2 species in IOC list.
    1 species given new common name.

Melanopareia:
    4 species in IOC list.
    4 species given new common names.

Melanoperdix:
    1 species in IOC list.
    1 species given new specific name.

Meliarchus:
    1 species in IOC list.
    1 species reassigned to genus Melidectes with new common name.

Melidectes:
    10 species in IOC list.
    1 species only in Clements list.
    10 species given new common names.

Melierax:
    3 species in IOC list.
    1 species only in Clements list.
    3 species given new common names.

Meliphaga:
    12 species in IOC list.
    1 species only in Clements list.
    2 species given new common names.

Melipotes:
    3 species in IOC list.
    1 species given new common name.

Melocichla:
    1 species in IOC list.
    1 species given new common name.

Melozone:
    4 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Merops:
    23 species in IOC list.
    2 species given new common names.

Mesitornis:
    2 species in IOC list.
    1 species given new specific name.

Metabolus:
    1 species in IOC list.
    1 species given new common name.

Metallura:
    9 species in IOC list.
    1 species given new common name.

Metriopelia:
    4 species in IOC list.
    4 species given new common names.

Micrastur:
    7 species in IOC list.
    7 species given new common names.

Microcerculus:
    4 species in IOC list.
    2 species given new common names.

Microeca:
    6 species in IOC list.
    4 species given new common names.

Micronisus:
    1 species in IOC list.
    1 species reassigned to genus Melierax.

Micropsitta:
    6 species in IOC list.
    6 species given new common names.

Microscelis:
    1 species in IOC list.
    1 species reassigned to genus Ixos.

Mimizuku:
    1 species in IOC list.
    1 species given new common name.

Mimodes:
    1 species in IOC list.
    1 species reassigned to genus Mimus.

Mimus:
    9 species in IOC list.
    1 species only in Clements list.

Mionectes:
    5 species in IOC list.
    2 species given new common names.

Mirafra:
    29 species in IOC list.
    1 species only in Clements list.
    4 species reassigned to genus Calendulauda.
    12 species given new common names.

Mitrephanes:
    2 species in IOC list.
    2 species given new common names.

Mitu:
    4 species in IOC list.
    2 species given new specific names.

Modulatrix:
    2 species in IOC list.
    1 species reassigned to genus Arcanator with new common name.

Moho:
    2 species in IOC list.
    2 species not in Clements list.

Mohoua:
    2 species in IOC list.
    1 species only in Clements list.

Molothrus:
    6 species in IOC list.
    1 species not in Clements list.

Monachella:
    1 species in IOC list.
    1 species given new common name.

Monarcha:
    31 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    2 species given new specific names.
    3 species given new common names.

Monticola:
    11 species in IOC list.
    1 species not in Clements list.
    10 species given new common names.

Montifringilla:
    3 species in IOC list.
    5 species only in Clements list.
    1 species given new common name.
    1 species given new specific and common names.

Morococcyx:
    1 species in IOC list.
    1 species given new common name.

Morus:
    3 species in IOC list.
    1 species given new common name.

Motacilla:
    12 species in IOC list.
    2 species given new common names.

Moupinia:
    2 species in IOC list.
    1 species reassigned to genus Chrysomma.
    1 species reassigned to genus Chrysomma with new specific name.

Muscicapa:
    24 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    3 species given new common names.

Muscicapella:
    1 species in IOC list.
    1 species given new common name.

Muscigralla:
    1 species in IOC list.
    1 species given new common name.

Muscipipra:
    1 species in IOC list.
    1 species given new common name.

Muscisaxicola:
    13 species in IOC list.
    13 species given new common names.

Musophaga:
    2 species in IOC list.
    1 species given new common name.

Myadestes:
    13 species in IOC list.
    1 species not in Clements list.

Mycerobas:
    4 species in IOC list.
    1 species given new specific name.

Myiagra:
    20 species in IOC list.
    2 species not in Clements list.
    4 species given new common names.

Myiarchus:
    22 species in IOC list.
    1 species given new common name.

Myiobius:
    5 species in IOC list.
    5 species given new common names.

Myioborus:
    12 species in IOC list.
    11 species given new common names.
    1 species given new specific and common names.

Myiomela:
    2 species in IOC list.
    1 species reassigned to genus Cinclidium.
    1 species reassigned to genus Cinclidium with new specific name.

Myiopagis:
    7 species in IOC list.
    1 species given new common name.

Myioparus:
    2 species in IOC list.
    2 species given new common names.

Myiornis:
    4 species in IOC list.
    4 species given new common names.

Myiotheretes:
    4 species in IOC list.
    4 species given new common names.

Myiozetetes:
    4 species in IOC list.
    1 species given new common name.

Myophonus:
    8 species in IOC list.
    1 species only in Clements list.
    8 species given new common names.

Myospiza:
    2 species in IOC list.
    2 species reassigned to genus Ammodramus.

Myrmeciza:
    20 species in IOC list.
    4 species given new common names.

Myrmecocichla:
    7 species in IOC list.
    5 species given new common names.

Myrmotherula:
    36 species in IOC list.
    1 species not in Clements list.
    6 species given new common names.

Myza:
    2 species in IOC list.
    2 species given new common names.

Myzomela:
    29 species in IOC list.
    2 species only in Clements list.
    9 species given new common names.

Nannopsittaca:
    2 species in IOC list.
    1 species given new common name.

Napothera:
    9 species in IOC list.
    1 species given new common name.

Neafrapus:
    2 species in IOC list.
    1 species given new common name.

Nectarinia:
    6 species in IOC list.
    1 species given new specific name.
    2 species given new common names.

Neochmia:
    4 species in IOC list.
    1 species given new common name.

Neocossyphus:
    2 species in IOC list.
    2 species only in Clements list.
    2 species given new common names.

Neodrepanis:
    2 species in IOC list.
    2 species given new common names.

Neomorphus:
    4 species in IOC list.
    1 species only in Clements list.
    4 species given new common names.

Neopelma:
    5 species in IOC list.
    5 species given new common names.

Neophema:
    6 species in IOC list.
    1 species only in Clements list.

Neopipo:
    1 species in IOC list.
    1 species given new common name.

Neopsephotus:
    1 species in IOC list.
    1 species reassigned to genus Neophema.

Neorhopias:
    1 species only in Clements list.

Neositta:
    2 species only in Clements list.

Neothraupis:
    1 species in IOC list.
    1 species given new common name.

Neotis:
    4 species in IOC list.
    1 species given new common name.

Nesillas:
    6 species in IOC list.
    1 species not in Clements list.
    5 species given new common names.

Nesocharis:
    3 species in IOC list.
    2 species given new common names.

Nesoclopeus:
    2 species in IOC list.
    1 species not in Clements list.

Nesofregetta:
    1 species in IOC list.
    1 species given new common name.

Nesomimus:
    4 species in IOC list.
    1 species given new common name.

Nesospiza:
    2 species in IOC list.
    2 species given new common names.

Nesotriccus:
    1 species in IOC list.
    1 species given new common name.

Nettapus:
    3 species in IOC list.
    3 species given new common names.

Nicator:
    3 species in IOC list.
    1 species given new common name.

Nigrita:
    4 species in IOC list.
    4 species given new common names.

Ninox:
    22 species in IOC list.
    2 species only in Clements list.
    1 species given new specific name.
    14 species given new common names.

Nomonyx:
    1 species in IOC list.
    1 species given new specific name.

Nonnula:
    6 species in IOC list.
    1 species given new common name.

Nothoprocta:
    7 species in IOC list.
    1 species not in Clements list.

Nucifraga:
    2 species in IOC list.
    1 species given new common name.

Numenius:
    8 species in IOC list.
    1 species given new common name.

Nyctanassa:
    1 species in IOC list.
    1 species given new common name.

Nycticorax:
    2 species in IOC list.
    2 species given new common names.

Nycticryphes:
    1 species in IOC list.
    1 species reassigned to genus Rostratula with new specific and common names.

Nyctiprogne:
    2 species in IOC list.
    1 species given new common name.

Nystalus:
    5 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Oceanites:
    3 species in IOC list.
    3 species given new common names.

Oceanodroma:
    12 species in IOC list.
    12 species given new common names.

Ochetorhynchus:
    2 species only in Clements list.

Ochthoeca:
    13 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Ochthornis:
    1 species in IOC list.
    1 species given new common name.

Oculocincta:
    1 species in IOC list.
    1 species given new common name.

Ocyceros:
    3 species in IOC list.
    3 species given new common names.

Ocyphaps:
    1 species in IOC list.
    1 species reassigned to genus Geophaps.

Odontophorus:
    15 species in IOC list.
    15 species given new common names.

Odontorchilus:
    2 species in IOC list.
    1 species given new common name.

Odontospiza:
    1 species only in Clements list.

Oedistoma:
    2 species in IOC list.
    1 species reassigned to genus Toxorhamphus with new common name.
    1 species reassigned to genus Toxorhamphus with new specific and common names.

Oenanthe:
    23 species in IOC list.
    3 species not in Clements list.
    2 species given new common names.

Oligura:
    1 species in IOC list.
    1 species reassigned to genus Tesia.

Onychognathus:
    11 species in IOC list.
    1 species given new common name.

Onychoprion:
    4 species only in Clements list.

Onychorhynchus:
    4 species in IOC list.
    1 species not in Clements list.

Onychostruthus:
    1 species in IOC list.
    1 species reassigned to genus Montifringilla.

Oreophilais:
    1 species in IOC list.
    1 species reassigned to genus Prinia with new common name.

Oreophylax:
    1 species in IOC list.
    1 species given new common name.

Oreotrochilus:
    5 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Origma:
    1 species in IOC list.
    1 species given new common name.

Oriolus:
    27 species in IOC list.
    8 species given new common names.

Oroaetus:
    1 species in IOC list.
    1 species reassigned to genus Spizaetus.

Ortalis:
    16 species in IOC list.
    4 species not in Clements list.
    1 species given new common name.

Orthonyx:
    3 species in IOC list.
    2 species given new common names.

Orthotomus:
    11 species in IOC list.
    4 species only in Clements list.
    2 species given new common names.

Ortygospiza:
    4 species in IOC list.
    1 species reassigned to genus Paludipasser with new common name.
    3 species given new common names.

Oryzoborus:
    6 species in IOC list.
    6 species given new common names.

Otus:
    40 species in IOC list.
    2 species not in Clements list.
    6 species only in Clements list.
    38 species given new common names.

Pachycare:
    1 species in IOC list.
    1 species given new common name.

Pachycephala:
    39 species in IOC list.
    8 species not in Clements list.
    2 species only in Clements list.
    5 species given new common names.

Pachyphantes:
    1 species only in Clements list.

Pachyramphus:
    12 species in IOC list.
    5 species only in Clements list.
    1 species given new common name.

Padda:
    2 species only in Clements list.

Paludipasser:
    1 species only in Clements list.

Papasula:
    1 species in IOC list.
    1 species reassigned to genus Sula.

Parabuteo:
    1 species in IOC list.
    1 species given new common name.

Paradoxornis:
    19 species in IOC list.
    1 species not in Clements list.
    5 species given new common names.

Pardaliparus:
    3 species only in Clements list.

Parisoma:
    5 species in IOC list.
    1 species reassigned to genus Sylvia.
    4 species given new common names.

Paroreomyza:
    3 species in IOC list.
    1 species not in Clements list.

Parotia:
    6 species in IOC list.
    2 species not in Clements list.
    2 species given new common names.

Parus:
    24 species in IOC list.
    1 species not in Clements list.
    1 species reassigned to genus Macholophus.
    1 species reassigned to genus Sittiparus.
    7 species reassigned to genus Melaniparus.
    1 species reassigned to genus Pseudopodoces with new common name.
    7 species reassigned to genus Melaniparus with new common names.
    1 species given new common name.

Passer:
    23 species in IOC list.
    2 species only in Clements list.
    6 species given new common names.

Passerculus:
    2 species in IOC list.
    1 species not in Clements list.

Passerina:
    7 species in IOC list.
    1 species given new common name.

Pastor:
    1 species only in Clements list.

Patagioenas:
    17 species in IOC list.
    1 species given new common name.

Pauxi:
    2 species in IOC list.
    2 species given new common names.

Pelagodroma:
    1 species in IOC list.
    1 species given new common name.

Pelargopsis:
    3 species in IOC list.
    1 species given new common name.

Pelecanoides:
    4 species in IOC list.
    4 species given new common names.

Peliperdix:
    4 species in IOC list.
    4 species reassigned to genus Francolinus.

Pellorneum:
    8 species in IOC list.
    1 species not in Clements list.

Peltohyas:
    1 species only in Clements list.

Peltops:
    2 species in IOC list.
    2 species given new common names.

Penelopides:
    2 species in IOC list.
    4 species only in Clements list.

Peneoenanthe:
    1 species in IOC list.
    1 species reassigned to genus Eopsaltria.

Peneothello:
    4 species in IOC list.
    1 species given new common name.

Percnostola:
    3 species in IOC list.
    4 species only in Clements list.

Perdicula:
    4 species in IOC list.
    4 species given new common names.

Perdix:
    3 species in IOC list.
    1 species given new common name.

Pericrocotus:
    13 species in IOC list.
    3 species given new common names.

Periparus:
    7 species in IOC list.
    3 species reassigned to genus Pardaliparus.
    2 species given new common names.

Perisoreus:
    3 species in IOC list.
    1 species given new common name.

Pernis:
    3 species in IOC list.
    3 species given new common names.

Petrochelidon:
    11 species in IOC list.
    5 species given new common names.

Petroica:
    11 species in IOC list.
    1 species not in Clements list.
    4 species given new common names.

Petronia:
    1 species in IOC list.
    4 species only in Clements list.
    1 species given new common name.

Petrophassa:
    2 species in IOC list.
    2 species given new common names.

Pezoporus:
    2 species in IOC list.
    1 species reassigned to genus Geopsittacus.

Phacellodomus:
    10 species in IOC list.
    2 species not in Clements list.
    2 species given new common names.

Phaenicophaeus:
    6 species in IOC list.
    6 species only in Clements list.

Phaenicophilus:
    2 species in IOC list.
    2 species given new common names.

Phaeochroa:
    1 species only in Clements list.

Phaeomyias:
    2 species in IOC list.
    1 species not in Clements list.

Phaeothlypis:
    2 species in IOC list.
    1 species reassigned to genus Basileuterus.
    1 species reassigned to genus Basileuterus with new common name.

Phaethornis:
    27 species in IOC list.
    2 species not in Clements list.
    3 species given new common names.

Phainoptila:
    1 species in IOC list.
    1 species given new common name.

Phalacrocorax:
    17 species in IOC list.
    1 species not in Clements list.
    23 species only in Clements list.
    2 species given new common names.

Phapitreron:
    3 species in IOC list.
    2 species given new common names.
    1 species given new specific and common names.

Phasianus:
    1 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Phegornis:
    1 species in IOC list.
    1 species given new common name.

Pheucticus:
    6 species in IOC list.
    2 species given new common names.

Phibalura:
    2 species in IOC list.
    1 species not in Clements list.

Philemon:
    17 species in IOC list.
    2 species not in Clements list.
    2 species given new common names.

Philetairus:
    1 species in IOC list.
    1 species given new common name.

Philydor:
    10 species in IOC list.
    1 species given new common name.

Phlogothraupis:
    1 species in IOC list.
    1 species reassigned to genus Ramphocelus with new specific name.

Phodilus:
    2 species in IOC list.
    2 species given new common names.

Phoeniconaias:
    1 species in IOC list.
    1 species reassigned to genus Phoenicopterus.

Phoenicoparrus:
    2 species in IOC list.
    1 species reassigned to genus Phoenicopterus.
    1 species reassigned to genus Phoenicopterus with new common name.

Phoenicopterus:
    3 species in IOC list.
    3 species only in Clements list.
    1 species given new common name.

Phoeniculus:
    6 species in IOC list.
    1 species not in Clements list.
    5 species given new common names.

Phoenicurus:
    11 species in IOC list.
    3 species given new common names.

Pholia:
    1 species in IOC list.
    1 species only in Clements list.

Pholidornis:
    1 species in IOC list.
    1 species given new common name.

Phonygammus:
    1 species in IOC list.
    1 species reassigned to genus Manucodia.

Phragmacia:
    1 species in IOC list.
    1 species reassigned to genus Prinia with new common name.

Phrygilus:
    11 species in IOC list.
    11 species given new common names.

Phylidonyris:
    4 species in IOC list.
    3 species only in Clements list.

Phyllastrephus:
    20 species in IOC list.
    2 species not in Clements list.
    5 species only in Clements list.
    10 species given new common names.

Phyllomyias:
    13 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Phylloscartes:
    16 species in IOC list.
    2 species given new common names.

Phylloscopus:
    58 species in IOC list.
    2 species not in Clements list.
    1 species reassigned to genus Seicercus with new common name.
    34 species given new common names.

Piaya:
    2 species in IOC list.
    1 species only in Clements list.

Picathartes:
    2 species in IOC list.
    2 species given new common names.

Picoides:
    14 species in IOC list.
    1 species reassigned to genus Dendropicos.
    1 species given new common name.

Piculus:
    11 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Picumnus:
    27 species in IOC list.
    3 species given new common names.

Picus:
    15 species in IOC list.
    3 species given new common names.

Pinaroloxias:
    1 species in IOC list.
    1 species given new common name.

Pionus:
    8 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Pipile:
    2 species in IOC list.
    2 species only in Clements list.
    2 species given new common names.

Pipilo:
    8 species in IOC list.
    1 species only in Clements list.
    1 species reassigned to genus Piplio.

Piplio:
    1 species only in Clements list.

Pipra:
    9 species in IOC list.
    1 species reassigned to genus Dixiphia.

Piprites:
    3 species in IOC list.
    1 species given new specific name.
    1 species given new common name.

Piranga:
    11 species in IOC list.
    2 species not in Clements list.
    1 species given new common name.

Pithecophaga:
    1 species in IOC list.
    1 species given new common name.

Pitta:
    33 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Platycercus:
    4 species in IOC list.
    4 species only in Clements list.
    1 species given new common name.

Platypsaris:
    5 species in IOC list.
    5 species reassigned to genus Pachyramphus.

Platysteira:
    4 species in IOC list.
    6 species only in Clements list.

Ploceus:
    64 species in IOC list.
    1 species reassigned to genus Pachyphantes.
    20 species given new common names.
    1 species given new specific and common names.

Pluvialis:
    4 species in IOC list.
    4 species given new common names.

Pnoepyga:
    3 species in IOC list.
    1 species given new common name.

Podargus:
    4 species in IOC list.
    1 species not in Clements list.

Podiceps:
    8 species in IOC list.
    1 species given new common name.

Podilymbus:
    2 species in IOC list.
    1 species not in Clements list.

Podoces:
    4 species in IOC list.
    4 species given new common names.

Poecile:
    13 species in IOC list.
    3 species only in Clements list.
    1 species reassigned to genus Sittiparus with new specific name.
    1 species given new common name.

Poecilodryas:
    8 species in IOC list.
    2 species not in Clements list.
    1 species reassigned to genus Heteromyias with new common name.

Poecilotriccus:
    12 species in IOC list.
    1 species given new specific name.
    5 species given new common names.

Pogonotriccus:
    7 species in IOC list.
    7 species given new common names.

Poicephalus:
    10 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Polioptila:
    12 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    1 species given new common name.

Polioxolmis:
    1 species in IOC list.
    1 species given new common name.

Polyerata:
    7 species only in Clements list.

Polyplectron:
    7 species in IOC list.
    1 species given new common name.

Polystictus:
    2 species in IOC list.
    1 species given new common name.

Polytelis:
    3 species in IOC list.
    1 species given new common name.

Pomarea:
    5 species in IOC list.
    1 species given new common name.

Pomatorhinus:
    9 species in IOC list.
    9 species given new common names.

Pomatostomus:
    4 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Poospiza:
    14 species in IOC list.
    3 species only in Clements list.
    14 species given new common names.

Poospizopsis:
    1 species in IOC list.
    1 species reassigned to genus Poospiza with new common name.

Popelairia:
    4 species in IOC list.
    1 species reassigned to genus Discosura.
    1 species given new common name.

Porphyrio:
    6 species in IOC list.
    1 species not in Clements list.
    2 species given new specific names.

Porphyrospiza:
    1 species in IOC list.
    1 species given new common name.

Porzana:
    14 species in IOC list.
    1 species reassigned to genus Amaurornis.
    1 species given new common name.

Prinia:
    23 species in IOC list.
    1 species not in Clements list.
    6 species only in Clements list.
    3 species given new common names.

Prioniturus:
    8 species in IOC list.
    1 species only in Clements list.
    8 species given new common names.

Prionops:
    8 species in IOC list.
    4 species given new common names.

Procellaria:
    5 species in IOC list.
    1 species not in Clements list.
    3 species given new common names.

Procelsterna:
    2 species in IOC list.
    1 species given new common name.

Procnias:
    4 species in IOC list.
    2 species given new specific names.

Prodotiscus:
    3 species in IOC list.
    3 species given new common names.

Progne:
    9 species in IOC list.
    1 species given new common name.

Prosobonia:
    1 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.

Prosopeia:
    3 species in IOC list.
    3 species given new common names.

Prunella:
    13 species in IOC list.
    3 species given new common names.

Psalidoprocne:
    5 species in IOC list.
    5 species given new common names.

Psaltria:
    1 species in IOC list.
    1 species given new common name.

Psaltriparus:
    1 species in IOC list.
    1 species given new common name.

Psarocolius:
    9 species in IOC list.
    1 species not in Clements list.
    2 species only in Clements list.
    2 species reassigned to genus Gymnostinops.
    1 species reassigned to genus Gymnostinops with new common name.

Pseudelaenia:
    1 species in IOC list.
    1 species given new common name.

Pseudhirundo:
    1 species in IOC list.
    1 species reassigned to genus Pseudohirundo with new common name.

Pseudobulweria:
    3 species in IOC list.
    2 species reassigned to genus Pterodroma.
    1 species reassigned to genus Pterodroma with new common name.

Pseudochelidon:
    2 species in IOC list.
    2 species given new common names.

Pseudochloroptila:
    2 species only in Clements list.

Pseudocolaptes:
    3 species in IOC list.
    1 species not in Clements list.

Pseudocolopteryx:
    4 species in IOC list.
    1 species given new specific name.

Pseudocossyphus:
    3 species in IOC list.
    2 species given new common names.
    1 species given new specific and common names.

Pseudodacnis:
    1 species only in Clements list.

Pseudohirundo:
    1 species only in Clements list.

Pseudonigrita:
    2 species in IOC list.
    2 species given new common names.

Pseudopodoces:
    1 species only in Clements list.

Pseudoseisura:
    4 species in IOC list.
    1 species given new common name.

Pseudotriccus:
    3 species in IOC list.
    3 species given new common names.

Psilopsiagon:
    2 species in IOC list.
    1 species given new common name.

Psittacella:
    4 species in IOC list.
    4 species given new common names.

Psittacula:
    13 species in IOC list.
    3 species given new common names.

Psittaculirostris:
    3 species in IOC list.
    3 species given new common names.

Psittacus:
    1 species in IOC list.
    1 species given new common name.

Psophia:
    3 species in IOC list.
    1 species given new common name.

Psophocichla:
    1 species in IOC list.
    1 species given new specific name.

Psophodes:
    5 species in IOC list.
    1 species not in Clements list.

Pteridophora:
    1 species in IOC list.
    1 species given new common name.

Pternistis:
    23 species in IOC list.
    13 species reassigned to genus Francolinus.
    10 species reassigned to genus Francolinus with new common names.

Pterocnemia:
    1 species in IOC list.
    1 species reassigned to genus Rhea with new common name.

Pterodroma:
    32 species in IOC list.
    2 species not in Clements list.
    3 species only in Clements list.
    5 species given new common names.

Pteroglossus:
    14 species in IOC list.
    3 species not in Clements list.
    1 species reassigned to genus Baillonius.

Ptilinopus:
    50 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    48 species given new common names.
    1 species given new specific and common names.

Ptilogonys:
    2 species in IOC list.
    1 species given new common name.

Ptilopachus:
    2 species in IOC list.
    1 species reassigned to genus Francolinus.

Ptiloprora:
    6 species in IOC list.
    1 species given new common name.

Ptiloris:
    4 species in IOC list.
    1 species not in Clements list.

Ptyonoprogne:
    4 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Ptyrticus:
    1 species in IOC list.
    1 species given new common name.

Puffinus:
    19 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.
    2 species given new common names.

Pycnonotus:
    40 species in IOC list.
    3 species not in Clements list.
    1 species given new specific name.
    5 species given new common names.

Pygoscelis:
    3 species in IOC list.
    1 species given new specific name.

Pyrgilauda:
    4 species in IOC list.
    4 species reassigned to genus Montifringilla.

Pyrocephalus:
    2 species in IOC list.
    1 species not in Clements list.

Pyrrhocorax:
    2 species in IOC list.
    1 species given new common name.

Pyrrholaemus:
    2 species in IOC list.
    1 species reassigned to genus Chthonicola.

Pyrrhoplectes:
    1 species in IOC list.
    1 species given new common name.

Pyrrhula:
    6 species in IOC list.
    1 species given new common name.

Pyrrhura:
    21 species in IOC list.
    3 species not in Clements list.
    8 species only in Clements list.
    5 species given new common names.

Pyrroglaux:
    1 species in IOC list.
    1 species given new specific name.

Pytilia:
    5 species in IOC list.
    1 species given new common name.

Quiscalus:
    7 species in IOC list.
    1 species not in Clements list.

Rallina:
    8 species in IOC list.
    4 species given new common names.

Rallus:
    10 species in IOC list.
    1 species not in Clements list.
    2 species only in Clements list.

Ramphastos:
    9 species in IOC list.
    2 species not in Clements list.
    2 species given new common names.

Ramphocelus:
    9 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.

Ramphotrigon:
    3 species in IOC list.
    1 species given new specific and common names.

Regulus:
    6 species in IOC list.
    1 species not in Clements list.
    1 species only in Clements list.

Remiz:
    3 species in IOC list.
    1 species only in Clements list.
    3 species given new common names.

Rhabdornis:
    3 species in IOC list.
    2 species given new common names.
    1 species given new specific and common names.

Rhamphocharis:
    1 species in IOC list.
    1 species reassigned to genus Melanocharis.

Rhamphococcyx:
    1 species in IOC list.
    1 species reassigned to genus Phaenicophaeus.

Rhamphomantis:
    1 species only in Clements list.

Rhaphidura:
    2 species in IOC list.
    1 species given new common name.

Rhea:
    1 species in IOC list.
    1 species only in Clements list.

Rhinomyias:
    11 species in IOC list.
    11 species given new common names.

Rhinoplax:
    1 species in IOC list.
    1 species reassigned to genus Buceros.

Rhinopomastus:
    3 species in IOC list.
    3 species given new common names.

Rhinoptilus:
    4 species in IOC list.
    1 species reassigned to genus Smutsornis.

Rhinortha:
    1 species in IOC list.
    1 species reassigned to genus Phaenicophaeus with new specific and common names.

Rhipidura:
    44 species in IOC list.
    1 species only in Clements list.
    10 species given new common names.

Rhizothera:
    2 species in IOC list.
    1 species not in Clements list.

Rhodopechys:
    1 species in IOC list.
    1 species only in Clements list.

Rhodostethia:
    1 species in IOC list.
    1 species given new common name.

Rhopophilus:
    1 species in IOC list.
    1 species given new common name.

Rhopornis:
    1 species in IOC list.
    1 species given new specific name.

Rhyacornis:
    2 species in IOC list.
    2 species given new common names.

Rhynchostruthus:
    2 species in IOC list.
    2 species given new common names.

Rhynchotus:
    2 species in IOC list.
    1 species not in Clements list.

Rhyticeros:
    5 species in IOC list.
    5 species reassigned to genus Aceros.

Rhytipterna:
    3 species in IOC list.
    1 species given new common name.

Riparia:
    5 species in IOC list.
    3 species given new common names.

Rollandia:
    2 species in IOC list.
    1 species given new common name.

Rostratula:
    1 species in IOC list.
    2 species only in Clements list.
    1 species given new common name.

Rowettia:
    1 species in IOC list.
    1 species given new common name.

Rukia:
    2 species in IOC list.
    1 species given new common name.

Sagittarius:
    1 species in IOC list.
    1 species given new common name.

Saltator:
    16 species in IOC list.
    2 species given new common names.

Saltatricula:
    1 species in IOC list.
    1 species given new common name.

Sarkidiornis:
    2 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Saucerottia:
    9 species only in Clements list.

Saxicola:
    12 species in IOC list.
    2 species only in Clements list.
    8 species given new common names.
    1 species given new specific and common names.

Scardafella:
    2 species in IOC list.
    2 species reassigned to genus Columbina.

Scenopoeetes:
    1 species in IOC list.
    1 species reassigned to genus Ailuroedus with new common name.

Schiffornis:
    3 species in IOC list.
    1 species given new common name.

Schistes:
    1 species in IOC list.
    1 species reassigned to genus Augastes.

Schistocichla:
    3 species in IOC list.
    3 species reassigned to genus Percnostola.

Schistolais:
    2 species in IOC list.
    2 species reassigned to genus Prinia.

Schoeniophylax:
    1 species in IOC list.
    1 species given new specific name.

Scissirostrum:
    1 species in IOC list.
    1 species given new common name.

Scleroptila:
    7 species in IOC list.
    4 species reassigned to genus Francolinus.
    2 species reassigned to genus Francolinus with new specific names.
    1 species reassigned to genus Francolinus with new specific and common names.

Sclerurus:
    6 species in IOC list.
    1 species given new common name.

Scolopax:
    8 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Scotocerca:
    1 species in IOC list.
    1 species given new common name.

Scotopelia:
    3 species in IOC list.
    3 species given new common names.

Scytalopus:
    38 species in IOC list.
    1 species not in Clements list.
    3 species only in Clements list.
    7 species given new common names.

Seicercus:
    11 species in IOC list.
    1 species only in Clements list.
    4 species given new common names.

Seleucidis:
    1 species in IOC list.
    1 species given new specific name.

Semioptera:
    1 species in IOC list.
    1 species given new common name.

Sericornis:
    10 species in IOC list.
    3 species only in Clements list.
    1 species given new common name.

Sericulus:
    4 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Serinus:
    9 species in IOC list.
    34 species only in Clements list.
    3 species given new common names.

Sheppardia:
    10 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Sicalis:
    12 species in IOC list.
    10 species given new common names.

Sirystes:
    2 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Sitta:
    24 species in IOC list.
    4 species given new common names.

Sittiparus:
    2 species only in Clements list.

Smithornis:
    3 species in IOC list.
    1 species given new common name.

Smutsornis:
    1 species only in Clements list.

Snowornis:
    2 species in IOC list.
    1 species given new common name.

Speculanas:
    1 species in IOC list.
    1 species reassigned to genus Anas with new common name.

Speirops:
    4 species in IOC list.
    1 species given new common name.

Spelaeornis:
    6 species in IOC list.
    1 species given new common name.

Spermestes:
    3 species only in Clements list.

Sphecotheres:
    3 species in IOC list.
    1 species given new specific and common names.

Spilornis:
    6 species in IOC list.
    5 species given new common names.
    1 species given new specific and common names.

Spizaetus:
    12 species in IOC list.
    1 species not in Clements list.
    2 species only in Clements list.
    1 species given new common name.

Spizastur:
    1 species in IOC list.
    1 species reassigned to genus Spizaetus.

Spizella:
    8 species in IOC list.
    1 species not in Clements list.

Spiziapteryx:
    1 species in IOC list.
    1 species given new specific name.

Spizocorys:
    5 species in IOC list.
    1 species only in Clements list.

Sporaeginthus:
    2 species only in Clements list.

Sporophila:
    32 species in IOC list.
    1 species not in Clements list.
    3 species only in Clements list.
    4 species given new common names.

Sporopipes:
    2 species in IOC list.
    1 species given new common name.

Spreo:
    3 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Stachyris:
    28 species in IOC list.
    6 species given new common names.

Stenostira:
    1 species in IOC list.
    1 species given new common name.

Stephanoaetus:
    1 species in IOC list.
    1 species given new common name.

Stephanoxis:
    1 species in IOC list.
    1 species given new common name.

Stercorarius:
    7 species in IOC list.
    2 species given new common names.

Sterna:
    34 species in IOC list.
    1 species not in Clements list.
    6 species reassigned to genus Sternula.
    4 species reassigned to genus Thalasseus.
    1 species reassigned to genus Hydroprogne.
    1 species reassigned to genus Onychoprion.
    1 species reassigned to genus Gelochelidon.
    1 species reassigned to genus Sternula with new common name.
    1 species reassigned to genus Thalasseus with new common name.
    1 species reassigned to genus Thalasseus with new specific name.
    2 species reassigned to genus Onychoprion with new specific names.
    1 species reassigned to genus Chlidonias with new specific name.
    1 species reassigned to genus Onychoprion with new specific and common names.

Sternula:
    7 species only in Clements list.

Stigmatura:
    4 species in IOC list.
    2 species not in Clements list.

Stiphrornis:
    4 species in IOC list.
    3 species not in Clements list.
    1 species given new common name.

Stipiturus:
    3 species in IOC list.
    3 species given new common names.

Stizorhina:
    2 species in IOC list.
    2 species reassigned to genus Neocossyphus with new common names.

Strepera:
    3 species in IOC list.
    1 species given new common name.

Streptopelia:
    16 species in IOC list.
    11 species given new common names.

Streptoprocne:
    3 species in IOC list.
    1 species only in Clements list.

Strix:
    19 species in IOC list.
    3 species reassigned to genus Ciccaba.
    1 species reassigned to genus Ciccaba with new specific name.
    5 species given new common names.

Struthio:
    2 species in IOC list.
    1 species not in Clements list.
    1 species given new common name.

Sturnella:
    7 species in IOC list.
    1 species given new specific name.

Sturnia:
    6 species only in Clements list.

Sturnus:
    15 species in IOC list.
    1 species reassigned to genus Temenuchus.
    2 species reassigned to genus Sturnia.
    1 species reassigned to genus Gracupica.
    1 species reassigned to genus Pastor.
    1 species reassigned to genus Acridotheres with new common name.
    1 species reassigned to genus Gracupica with new common name.
    4 species reassigned to genus Sturnia with new specific names.
    1 species given new common name.

Stymphalornis:
    1 species in IOC list.
    1 species reassigned to genus Formicivora with new common name.

Sublegatus:
    3 species in IOC list.
    3 species given new common names.

Suiriri:
    3 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Sula:
    6 species in IOC list.
    1 species only in Clements list.

Surnia:
    1 species in IOC list.
    1 species given new common name.

Sylvia:
    21 species in IOC list.
    3 species only in Clements list.
    7 species given new common names.

Sylvietta:
    9 species in IOC list.
    2 species given new common names.

Sylviorthorhynchus:
    1 species in IOC list.
    1 species given new common name.

Synallaxis:
    34 species in IOC list.
    1 species given new specific name.
    4 species given new common names.

Synthliboramphus:
    4 species in IOC list.
    1 species given new common name.

Syrmaticus:
    5 species in IOC list.
    2 species given new common names.

Syrrhaptes:
    2 species in IOC list.
    1 species given new common name.

Taccocua:
    1 species in IOC list.
    1 species reassigned to genus Phaenicophaeus.

Tachornis:
    3 species in IOC list.
    3 species given new common names.

Tachuris:
    1 species in IOC list.
    1 species given new common name.

Tachybaptus:
    5 species in IOC list.
    1 species not in Clements list.

Tachyeres:
    4 species in IOC list.
    4 species given new common names.

Tadorna:
    6 species in IOC list.
    1 species given new common name.

Taeniopygia:
    2 species in IOC list.
    1 species only in Clements list.

Talegalla:
    3 species in IOC list.
    3 species given new common names.

Tangara:
    50 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Tanygnathus:
    4 species in IOC list.
    1 species given new common name.

Tanysiptera:
    9 species in IOC list.
    1 species not in Clements list.
    8 species given new common names.

Taphrolesbia:
    1 species in IOC list.
    1 species given new common name.

Taphrospilus:
    1 species in IOC list.
    1 species reassigned to genus Leucippus.

Tarsiger:
    5 species in IOC list.
    4 species given new common names.

Tauraco:
    14 species in IOC list.
    1 species given new specific name.
    1 species given new common name.

Tchagra:
    4 species in IOC list.
    1 species only in Clements list.

Telophorus:
    1 species in IOC list.
    8 species only in Clements list.

Temenuchus:
    1 species only in Clements list.

Tephrodornis:
    2 species in IOC list.
    1 species given new specific name.

Tephrozosterops:
    1 species in IOC list.
    1 species given new common name.

Terpsiphone:
    13 species in IOC list.
    13 species given new common names.

Tersina:
    1 species in IOC list.
    1 species given new common name.

Tesia:
    4 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Tetrao:
    2 species in IOC list.
    2 species only in Clements list.
    1 species given new common name.

Tetraophasis:
    2 species in IOC list.
    2 species given new common names.

Tetrastes:
    2 species in IOC list.
    2 species reassigned to genus Bonasa.

Thalassarche:
    5 species in IOC list.
    1 species given new specific name.
    1 species given new common name.

Thalasseus:
    6 species only in Clements list.

Thalurania:
    7 species in IOC list.
    1 species not in Clements list.

Thamnolaea:
    3 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Thamnophilus:
    27 species in IOC list.
    1 species only in Clements list.
    7 species given new common names.

Thapsinillas:
    1 species in IOC list.
    1 species reassigned to genus Alophoixus.

Theristicus:
    3 species in IOC list.
    1 species only in Clements list.

Thescelocichla:
    1 species in IOC list.
    1 species given new common name.

Thinocorus:
    2 species in IOC list.
    1 species given new common name.

Thinornis:
    2 species in IOC list.
    1 species given new common name.
    1 species given new specific and common names.

Thraupis:
    9 species in IOC list.
    1 species given new common name.

Threskiornis:
    4 species in IOC list.
    1 species given new common name.

Thripadectes:
    7 species in IOC list.
    1 species given new common name.

Thripophaga:
    4 species in IOC list.
    1 species given new common name.

Thryomanes:
    2 species in IOC list.
    1 species reassigned to genus Troglodytes.

Thryothorus:
    27 species in IOC list.
    1 species given new common name.

Tigriornis:
    1 species in IOC list.
    1 species given new specific and common names.

Tigrisoma:
    3 species in IOC list.
    3 species given new common names.

Tijuca:
    2 species in IOC list.
    1 species given new common name.

Tilmatura:
    1 species in IOC list.
    1 species given new common name.

Timeliopsis:
    3 species in IOC list.
    1 species reassigned to genus Glycichaera.

Tinamus:
    5 species in IOC list.
    1 species given new common name.

Tockus:
    14 species in IOC list.
    1 species only in Clements list.
    2 species given new common names.

Todiramphus:
    22 species in IOC list.
    7 species given new common names.

Todirostrum:
    7 species in IOC list.
    1 species given new common name.

Tolmomyias:
    7 species in IOC list.
    2 species not in Clements list.
    5 species given new common names.

Torgos:
    1 species only in Clements list.

Toxorhamphus:
    2 species in IOC list.
    2 species only in Clements list.
    2 species given new common names.

Toxostoma:
    10 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Treron:
    24 species in IOC list.
    1 species not in Clements list.
    21 species given new common names.
    2 species given new specific and common names.

Trichastoma:
    3 species in IOC list.
    1 species only in Clements list.

Trichixos:
    1 species in IOC list.
    1 species given new specific name.

Trichocichla:
    1 species only in Clements list.

Trichoglossus:
    13 species in IOC list.
    6 species not in Clements list.
    2 species given new common names.

Tricholaema:
    6 species in IOC list.
    2 species given new common names.

Trigonoceps:
    1 species only in Clements list.

Tringa:
    10 species in IOC list.
    3 species only in Clements list.

Trochocercus:
    5 species in IOC list.
    1 species reassigned to genus Elminia with new common name.
    2 species reassigned to genus Elminia with new specific and common names.
    2 species given new common names.

Troglodytes:
    9 species in IOC list.
    1 species only in Clements list.

Trogon:
    19 species in IOC list.
    3 species not in Clements list.
    1 species only in Clements list.
    2 species given new common names.

Tropicranus:
    1 species in IOC list.
    1 species reassigned to genus Tockus.

Trugon:
    1 species in IOC list.
    1 species given new common name.

Turacoena:
    2 species in IOC list.
    2 species given new common names.

Turdoides:
    29 species in IOC list.
    1 species given new specific name.
    6 species given new common names.
    1 species given new specific and common names.

Turdus:
    73 species in IOC list.
    9 species not in Clements list.
    17 species given new common names.

Turnagra:
    1 species in IOC list.
    1 species not in Clements list.

Turnix:
    15 species in IOC list.
    3 species given new common names.

Turtur:
    5 species in IOC list.
    4 species given new common names.

Tympanuchus:
    3 species in IOC list.
    2 species given new common names.

Tyranneutes:
    2 species in IOC list.
    2 species given new common names.

Tyrannus:
    13 species in IOC list.
    1 species given new common name.

Tyto:
    13 species in IOC list.
    1 species only in Clements list.
    11 species given new common names.

Upucerthia:
    9 species in IOC list.
    2 species reassigned to genus Ochetorhynchus.
    1 species given new common name.

Upupa:
    3 species in IOC list.
    1 species not in Clements list.

Uraeginthus:
    5 species in IOC list.
    1 species given new specific name.
    3 species given new common names.

Uratelornis:
    1 species in IOC list.
    1 species given new common name.

Urocissa:
    5 species in IOC list.
    4 species given new common names.

Urocynchramus:
    1 species in IOC list.
    1 species given new common name.

Urodynamis:
    1 species in IOC list.
    1 species reassigned to genus Eudynamys with new common name.

Urolestes:
    1 species in IOC list.
    1 species reassigned to genus Corvinella with new specific name.

Uromyias:
    2 species in IOC list.
    2 species reassigned to genus Anairetes.

Uropelia:
    1 species in IOC list.
    1 species given new common name.

Urorhipis:
    1 species in IOC list.
    1 species given new common name.

Urothraupis:
    1 species in IOC list.
    1 species given new common name.

Vanellus:
    23 species in IOC list.
    1 species only in Clements list.
    6 species given new common names.

Veles:
    1 species in IOC list.
    1 species reassigned to genus Caprimulgus.

Vidua:
    19 species in IOC list.
    8 species given new common names.

Vini:
    5 species in IOC list.
    1 species given new common name.

Vireo:
    32 species in IOC list.
    1 species not in Clements list.
    2 species given new common names.

Xanthomixis:
    4 species in IOC list.
    3 species reassigned to genus Phyllastrephus with new common names.
    1 species reassigned to genus Phyllastrephus with new specific and common names.

Xanthotis:
    4 species in IOC list.
    2 species given new specific names.

Xenerpestes:
    2 species in IOC list.
    2 species given new common names.

Xenicus:
    2 species in IOC list.
    2 species given new common names.

Xenocopsychus:
    1 species in IOC list.
    1 species given new common name.

Xenoperdix:
    1 species in IOC list.
    1 species given new common name.

Xiphidiopicus:
    1 species in IOC list.
    1 species given new common name.

Xiphirhynchus:
    1 species in IOC list.
    1 species given new common name.

Xiphocolaptes:
    4 species in IOC list.
    1 species only in Clements list.

Xiphorhynchus:
    14 species in IOC list.
    3 species only in Clements list.
    2 species reassigned to genus Dendroplex.

Xolmis:
    7 species in IOC list.
    1 species only in Clements list.
    1 species given new common name.

Yuhina:
    10 species in IOC list.
    1 species only in Clements list.

Zanclostomus:
    1 species in IOC list.
    1 species reassigned to genus Phaenicophaeus.

Zarhynchus:
    1 species in IOC list.
    1 species reassigned to genus Psarocolius.

Zavattariornis:
    1 species in IOC list.
    1 species given new common name.

Zenaida:
    7 species in IOC list.
    1 species given new common name.

Zimmerius:
    9 species in IOC list.
    1 species not in Clements list.

Zonotrichia:
    5 species in IOC list.
    1 species given new common name.

Zoonavena:
    3 species in IOC list.
    2 species given new common names.

Zoothera:
    36 species in IOC list.
    5 species not in Clements list.
    3 species only in Clements list.
    14 species given new common names.

Zosterops:
    78 species in IOC list.
    7 species not in Clements list.
    2 species only in Clements list.
    1 species given new specific name.
    33 species given new common names.

Updates

Please let me know if you find any errors in this summary. They may be due to errors in the source data or because of some bug in my program.