PBDB

Opinions from A. Wetmore 1940

'Accipiter belongs to Accipitridae'
'Accipiter striatus belongs to Accipiter'
'Accipitridae belongs to Falconoidea'
'Accipitrinae belongs to Accipitridae'
'Aechmophorus belongs to Colymbidae'
'Aechmophorus lucasi belongs to Aechmophorus'
'Aegypiinae belongs to Accipitridae'
'Agelaius belongs to Icteridae'
'Aix belongs to Anatinae'
'Ajaja is corrected as Ajaia and belongs to Plataleinae'
'Alauda alpestris is recombined as Otocoris alpestris'
'Alaudidae belongs to Passeres'
'Alca antiqua is recombined as Synthliboramphus antiquus'
'Alcae belongs to Charadriiformes'
'Alcinae belongs to Alcidae'
'Aletornis belongs to Gruinae'
'Aletornis bellus belongs to Aletornis'
'Aletornis gracilis belongs to Aletornis'
'Aletornis marshi is recombined as Grus marshi'
'Aletornis nobilis belongs to Aletornis'
'Aletornis pernix belongs to Aletornis'
'Aletornis venustus is recombined as Fulicaletornis venustus'
'Amphispiza belongs to Emberizinae'
'Anabernicula belongs to Anserinae'
'Anas belongs to Anatinae'
'Anas acuta is recombined as Dafila acuta'
'Anas albeola is recombined as Charitonetta albeola'
'Anas americana is recombined as Mareca americana'
'Anas bernicla is recombined as Branta bernicla'
'Anas caerulescens is recombined as Chen (Chen) caerulescens'
'Anas canadensis is recombined as Branta canadensis'
'Anas carolinensis is recombined as Nettion carolinense'
'Anas clypeata is recombined as Spatula clypeata'
'Anas collaris is recombined as Nyroca (Nyroca) collaris'
'Anas columbianus is recombined as Cygnus columbianus'
'Anas cyanoptera is recombined as Querquedula cyanoptera'
'Anas discors is recombined as Querquedula discors'
'Anas histrionicus is recombined as Histrionicus histrionicus'
'Anas hyemalis is recombined as Clangula hyemalis'
'Anas hyperboreus is recombined as Chen (Chen) hyperborea'
'Anas islandica is recombined as Glaucionetta islandica'
'Anas jamaicensis is recombined as Erismatura jamaicensis'
'Anas obscura fulvigula is recombined as Anas fulvigula'
'Anas obscura rubripes is recombined as Anas rubripes'
'Anas perspicillata is recombined as Melanitta (Pelionetta) perspicillata'
'Anas platyrhynchos belongs to Anas'
'Anas sponsa is recombined as Aix sponsa'
'Anas stelleri belongs to Anas' according to Pallas 1769
'Anas stelleri is recombined as Polysticta stelleri'
'Anas strepera is recombined as Chaulelasmus strepera'
'Anas valisineria is recombined as Nyroca (Aristonetta) valisineria'
'Anatidae belongs to Anseres'
'Anatinae belongs to Anatidae'
'Anhinga belongs to Anhingidae'
'Anhingidae belongs to Suliformes'
'Anser belongs to Anserinae'
'Anser albifrons belongs to Anser'
'Anser condoni belongs to Anser'
'Anser hutchinsii is recombined as Branta canadensis hutchinsi'
'Anser hypsibata is recombined as Branta hypsibata'
'Anseres belongs to Anseriformes'
'Anseriformes belongs to Neognathae'
'Anserinae belongs to Anatidae'
'Aphelocoma belongs to Garrulinae'
'Aphelocoma (Aphelocoma) belongs to Aphelocoma' according to Cabanis 1851
'Aphelocoma (Aphelocoma) belongs to Aphelocoma'
'Aquila belongs to Buteoninae'
'Aquila dananus is recombined as Buteo dananus'
'Aquila lydekkeri is recombined as Protostrix lydekkeri'
'Aquila pliogryps belongs to Aquila'
'Aquila sodalis belongs to Aquila'
'Aramidae belongs to Gruoidea'
'Aramides belongs to Rallinae'
'Aramornis belongs to Aramidae'
'Aramornis longurio belongs to Aramornis'
'Aramus belongs to Aramidae'
'Archaeophasianus belongs to Phasianinae'
'Archibuteo regalis is recombined as Buteo (Triorchis) regalis'
'Ardea belongs to Ardeinae'
'Ardea alba is recombined as Casmerodius albus'
'Ardea americana is recombined as Grus americana'
'Ardea caerulea is recombined as Florida caerulea'
'Ardea canadensis is recombined as Grus canadensis'
'Ardea herodias belongs to Ardea'
'Ardea lentiginosa is recombined as Botaurus lentiginosus'
'Ardea nycticorax is recombined as Nycticorax nycticorax'
'Ardea paloccidentalis belongs to Ardea'
'Ardea thula is recombined as Egretta thula'
'Ardea tricolor is recombined as Hydranassa tricolor'
'Ardea violacea is recombined as Nyctanassa violacea'
'Ardea virescens is recombined as Butorides virescens'
'Ardeae belongs to Ciconiiformes'
'Ardeidae belongs to Ardeae'
'Ardeinae belongs to Ardeidae'
'Ardenna was reranked as Puffinus (Ardenna) and belongs to Puffinus'
'Arinae belongs to Psittacidae'
'Aristonetta was reranked as Nyroca (Aristonetta) and belongs to Nyroca'
'Asio belongs to Strigidae'
'Astur belongs to Accipitrinae'
'Asyndesmus belongs to Picinae'
'Badistornis belongs to Aramidae'
'Badistornis aramus belongs to Badistornis'
'Baptornis belongs to Baptornithidae'
'Baptornis advenus belongs to Baptornis'
'Baptornithidae belongs to Hesperornithiformes'
'Barornis belongs to Diatrymidae'
'Barornis regens belongs to Barornis'
'Bathornis belongs to Bathornithidae'
'Bathornis celeripes belongs to Bathornis'
'Bathornis cursor belongs to Bathornis'
'Bathornis veredus belongs to Bathornis'
'Bathornithidae belongs to Cariamae'
'Bombycilla belongs to Bombycillidae'
'Bombycilla cedrorum belongs to Bombycilla'
'Bombycillidae belongs to Passeres'
'Bonasa belongs to Tetraonidae'
'Botaurinae belongs to Ardeidae'
'Botauroides belongs to Botaurinae'
'Botauroides parvus belongs to Botauroides'
'Botaurus belongs to Botaurinae'
'Branta belongs to Anserinae'
'Branta dickey is corrected as Branta dickeyi and belongs to Branta'
'Branta esmeralda belongs to Branta'
'Branta howardae belongs to Branta'
'Branta minuscula is recombined as Anabernicula miniscula'
'Branta propinqua belongs to Branta'
'Breagyps belongs to Cathartidae'
'Bubo belongs to Strigidae'
'Bubo leptosteus is recombined as Protostrix leptosteus'
'Bubo sinclairi belongs to Bubo'
'Buteo belongs to Buteoninae'
'Buteo ales belongs to Buteo'
'Buteo antecursor belongs to Buteo'
'Buteo conterminus belongs to Buteo'
'Buteo contortus belongs to Buteo'
'Buteo grangeri belongs to Buteo'
'Buteo swainsoni belongs to Buteo'
'Buteo typhoius belongs to Buteo'
'Buteoninae belongs to Accipitridae'
'Butorides belongs to Ardeinae'
'Capella belongs to Scolopacidae'
'Carbo auritus is recombined as Phalacrocorax auritus'
'Carduelinae belongs to Fringillidae'
'Cariamae belongs to Gruiformes'
'Carpodacus belongs to Carduelinae'
'Casmerodius belongs to Ardeinae'
'Cassidix belongs to Icteridae'
'Catarractes affinis is recombined as Uria affinis'
'Catarractes antiquus is recombined as Uria antiqua'
'Catharista occidentalis belongs to Catharista'
'Catharista shastensis belongs to Catharista'
'Cathartae belongs to Falconiformes'
'Cathartes belongs to Cathartidae'
'Cathartes umbrosus is recombined as Palaeoborus umbrosus'
'Cathartidae belongs to Cathartae'
'Cathartornis belongs to Teratornithidae'
'Cathartornis gracilis belongs to Cathartornis'
'Centrocercus belongs to Tetraonidae'
'Ceophloeus belongs to Picinae'
'Cerchneis was reranked as Falco (Cerchneis) and belongs to Falco'
'Cerorhinca belongs to Alcinae'
'Cerorhinca dubia belongs to Cerorhinca'
'Chamaea belongs to Chamaeidae'
'Chamaeidae belongs to Passeres'
'Charadrii belongs to Charadriiformes'
'Charadriidae belongs to Charadrioidea'
'Charadriiformes belongs to Neognathae'
'Charadriinae belongs to Charadriidae'
'Charadrioidea belongs to Charadrii'
'Charadrius belongs to Charadriinae'
'Charadrius montanus is recombined as Eupoda montana'
'Charadrius sheppardianus belongs to Charadrius'
'Charadrius vociferus is recombined as Oxyechus vociferus'
'Charitonetta belongs to Nyrocinae'
'Chaulelasmus belongs to Anatinae'
'Chen belongs to Anserinae'
'Chen (Chen) belongs to Chen' according to Boie 1822
'Chen (Chen) belongs to Chen'
'Chendytes belongs to Nyrocinae'
'Chendytes lawi belongs to Chendytes'
'Chlidonias belongs to Sterninae'
'Chroicocephalus was reranked as Larus (Chroicocephalus) and belongs to Larus'
'Ciconia belongs to Ciconiinae'
'Ciconia maltha belongs to Ciconia'
'Ciconia mycteria is recombined as Jabiru mycteria'
'Ciconiae belongs to Ciconiiformes'
'Ciconiidae belongs to Ciconioidea'
'Ciconiiformes belongs to Neognathae'
'Ciconiinae belongs to Ciconiidae'
'Circinae belongs to Accipitridae'
'Circus belongs to Circinae'
'Clangocycnus was reranked as Cygnus (Clangocycnus) and belongs to Cygnus'
'Clangula belongs to Nyrocinae'
'Colaptes belongs to Picinae'
'Colinus belongs to Odontophorinae'
'Colinus eatoni belongs to Colinus'
'Columbiformes belongs to Neognathae'
'Colymbidae belongs to Colymbiformes'
'Colymbus belongs to Colymbidae'
'Colymbus (Colymbus) belongs to Colymbus' according to Linnaeus 1758
'Colymbus (Colymbus) belongs to Colymbus'
'Colymbus aalge is recombined as Uria aalge'
'Colymbus auritus is recombined as Colymbus (Dytes) auritus'
'Colymbus grisegena is recombined as Colymbus (Colymbus) grisegena'
'Colymbus parvus is recombined as Colymbus (Dytes) parvus'
'Colymbus podiceps is recombined as Podilymbus podiceps'
'Coniornis belongs to Hesperornithidae'
'Coniornis altus belongs to Coniornis'
'Conuropsis belongs to Arinae'
'Conuropsis fratercula belongs to Conuropsis'
'Coragyps belongs to Cathartidae'
'Corvidae belongs to Passeres'
'Corvinae belongs to Corvidae'
'Corvus belongs to Corvinae'
'Corvus brachyrhynchos belongs to Corvus'
'Corvus caurinus belongs to Corvus' according to Baird 1858
'Corvus caurinus belongs to Corvus'
'Corvus corax belongs to Corvus'
'Corvus cryptoleucus belongs to Corvus' according to Couch 1854
'Corvus cryptoleucus belongs to Corvus'
'Corvus mexicanus is recombined as Cassidix mexicanus'
'Corvus nuttalli [misspelled as Pica nutallii] belongs to Pica'
'Corvus ossifragus belongs to Corvus'
'Corvus shufeldti belongs to Corvus'
'Corvus stelleri is recombined as Cyanocitta stelleri'
'Cracidae belongs to Cracoidea'
'Cracoidea belongs to Galli'
'Creccoides belongs to Rallinae'
'Creccoides osbornii belongs to Creccoides'
'Cryptoglaux belongs to Strigidae'
'Cuculi belongs to Cuculiformes'
'Cuculidae belongs to Cuculi'
'Cuculiformes belongs to Neognathae'
'Cupidonia cupido pallidicincta is recombined as Tympanuchus pallidicinctus'
'Cyanocephalus belongs to Corvinae'
'Cyanocitta belongs to Garrulinae'
'Cygninini was reranked as the subfamily Cygninae and belongs to Anatidae'
'Cygnus belongs to Cygnini'
'Cygnus buccinator is recombined as Cygnus (Clangocycnus) buccinator'
'Cygnus matthewi is recombined as Cygnus (Clangocycnus) matthewi'
'Cygnus paloregonus is recombined as Cygnus (Clangocycnus) paloregonus'
'Cyphornis belongs to Cyphornithidae'
'Cyphornis magnus belongs to Cyphornis'
'Cyphornithidae belongs to Pelecanoidea'
'Cyrtonyx belongs to Odontophorinae'
'Cyrtopelicanus was reranked as Pelecanus (Cyrtopelicanus) and belongs to Pelecanus'
'Dafila belongs to Anatinae'
'Dendragapus belongs to Tetraonidae'
'Dendrocygna belongs to Dendrocygninae'
'Dendrocygna eversa belongs to Dendrocygna'
'Dendrocygninae belongs to Anatidae'
'Diatryma belongs to Diatrymidae'
'Diatryma ajax belongs to Diatryma'
'Diatryma gigantea is corrected as Diatryma giganteum and belongs to Diatryma'
'Diatryma steini belongs to Diatryma'
'Diatrymae is corrected as Diatrymiformes and belongs to Neognathae'
'Diatrymidae belongs to Diatrymiformes'
'Diomedea belongs to Diomedeidae'
'Diomedea albatrus belongs to Diomedea'
'Diomedeidae belongs to Procellariiformes'
'Dytes was reranked as Colymbus (Dytes) and belongs to Colymbus'
'Egretta belongs to Ardeinae'
'Elaninae belongs to Accipitridae'
'Elanus belongs to Elaninae'
'Emberiza belli belongs to Emberiza' according to Cassin 1850
'Emberiza belli is recombined as Amphispiza belli'
'Emberiza bilineata is recombined as Amphispiza bilineata'
'Emberizidae was reranked as the subfamily Emberizinae and belongs to Fringillidae'
'Eoceornis belongs to Ardeinae'
'Eoceornis ardetta belongs to Eoceornis'
'Eocrex belongs to Gallinulinae'
'Eocrex primus belongs to Eocrex'
'Eonessa belongs to Eonessinae'
'Eonessa anaticula belongs to Eonessa'
'Eonessinae belongs to Anatidae'
'Erismatura belongs to Erismaturinae'
'Erismaturinae belongs to Anatidae'
'Euphagus belongs to Icteridae'
'Euphagus magnirostris belongs to Euphagus'
'Eupoda belongs to Charadriinae'
'Falco belongs to Falconidae'
'Falco atricapillus belongs to Falco' according to Wilson 1812
'Falco atricapillus is recombined as Astur atricapillus'
'Falco chrysaetos is recombined as Aquila chrysaetos'
'Falco columbarius is recombined as Falco (Tinnunculus) columbarius'
'Falco cooperi is recombined as Accipiter cooperii'
'Falco haliaetus is recombined as Pandion haliaetus'
'Falco hudsonius is recombined as Circus hudsonius'
'Falco jamaicensis is recombined as Buteo jamaicensis'
'Falco lagopus is recombined as Buteo (Triorchis) lagopus'
'Falco leucocephalus is recombined as Haliaeetus leucocephalus'
'Falco lineatus is recombined as Buteo lineatus'
'Falco mexicanus is recombined as Falco (Hierofalco) mexicanus'
'Falco peregrinus is recombined as Falco (Rhynchodon) peregrinus'
'Falco ramenta is recombined as Falco (Tinnunculus) ramenta'
'Falco sparverius is recombined as Falco (Cerchneis) sparverius'
'Falco swarthi is recombined as Falco (Hierofalco) swarthi'
'Falco velox is recombined as Accipiter striatus velox'
'Falcones belongs to Falconiformes'
'Falconidae belongs to Falconoidea'
'Falconiformes belongs to Neognathae'
'Falconinae belongs to Falconidae'
'Falconoidae is corrected as Falconoidea and belongs to Falcones'
'Florida belongs to Ardeinae'
'Fringilla iliaca is recombined as Passerella iliaca'
'Fringilla mexicana belongs to Fringilla' according to Müller 1776
'Fringilla mexicana is recombined as Carpodacus mexicanus'
'Fringilla passerina is recombined as Spizella passerina'
'Fringilla pinus is recombined as Spinus pinus'
'Fringilla tristis is recombined as Spinus tristis'
'Fringillidae belongs to Passeres'
'Fulica belongs to Fulicinae'
'Fulica americana belongs to Fulica'
'Fulica cajanea is recombined as Aramides cajanea'
'Fulica chloropus is recombined as Gallinula chloropus'
'Fulica minor belongs to Fulica'
'Fulicaletornis belongs to Gruinae'
'Fulicinae belongs to Rallidae'
'Fuligula affinis is recombined as Nyroca (Fulix) affinis'
'Fuligula americana is recombined as Nyroca (Nyroca) americana'
'Fulix was reranked as Nyroca (Fulix) and belongs to Nyroca'
'Fulmarus belongs to Procellariidae'
'Galli belongs to Galliformes'
'Galliformes belongs to Neognathae'
'Gallinula belongs to Gallinulinae'
'Gallinulinae belongs to Rallidae'
'Gallinuloides belongs to Gallinuloididae'
'Gallinuloides prentici is recombined as Paragrus prentici'
'Gallinuloides wyomingensis belongs to Gallinuloides'
'Gallinuloididae belongs to Cracoidea'
'Garrulinae belongs to Corvidae'
'Garrulus californicus is recombined as Aphelocoma (Aphelocoma) californica'
'Gavia belongs to Gaviinae'
'Gavia concinna belongs to Gavia'
'Gavia pusilla is recombined as Gaviella pusilla'
'Gaviella belongs to Gaviellinae'
'Gaviidae belongs to Gaviiformes'
'Gaviiformes belongs to Neognathae'
'Gaviinae belongs to Gaviidae'
'Geococcyx belongs to Neomorphinae'
'Geococcyx conklingi belongs to Geococcyx'
'Geranoaetus fragilis is recombined as Hypomorphnus fragilis'
'Geranoaetus grinnelli is recombined as Spizaetus grinnelli'
'Geranoides belongs to Gruoidea'
'Geranoides jepseni belongs to Geranoides'
'Geranoididae belongs to Gruoidea'
'Glaucidium belongs to Strigidae'
'Glaucidium gnoma belongs to Glaucidium'
'Glaucionetta belongs to Nyrocinae'
'Gracula quiscula is recombined as Quiscalus quiscula'
'Graculavus belongs to Phalacrocoracidae'
'Graculavus agilis is recombined as Ichthyornis agilis'
'Graculavus anceps is recombined as Ichthyornis anceps'
'Graculavus pumilus belongs to Graculavus'
'Graculavus velox belongs to Graculavus'
'Graculus idahensis is recombined as Phalacrocorax idahensis'
'Graculus macropus is recombined as Phalacrocorax macropus'
'Grues belongs to Gruiformes'
'Gruidae belongs to Gruoidea'
'Gruiformes belongs to Neognathae'
'Gruinae belongs to Gruidae'
'Gruioidea is corrected as Gruoidea and belongs to Grues'
'Grus belongs to Gruinae'
'Grus nannodes belongs to Grus'
'Grus proavus belongs to Grus'
'Guara belongs to Threskiornithinae'
'Gymnogyps belongs to Cathartidae'
'Gymnogyps amplus belongs to Gymnogyps'
'Gymnorhinus cyanocephalus is recombined as Cyanocephalus cyanocephalus'
'Haematopodidae belongs to Charadrioidea'
'Haliaeetus belongs to Buteoninae'
'Hargeria belongs to Hesperornithidae'
'Harpes rediviva is recombined as Toxostoma redivivum'
'Harporhynchus bendirei belongs to Harporhynchus' according to Coues 1873
'Harporhynchus bendirei is recombined as Toxostoma bendirei'
'Hesperornidae is corrected as Hesperornithidae and belongs to Hesperornithiformes'
'Hesperornis belongs to Hesperornithidae'
'Hesperornis gracilis is recombined as Hargeria gracilis'
'Hesperornis montana belongs to Hesperornis'
'Hesperornis regalis belongs to Hesperornis'
'Hesperornithiformes belongs to Odontognathae'
'Hierofalco was reranked as Falco (Hierofalco) and belongs to Falco'
'Hirundinidae belongs to Passeres'
'Hirundo albifrons is recombined as Petrochelidon albifrons'
'Hirundo albifrons belongs to Hirundo' according to Rafinesque 1822
'Histrionicus belongs to Nyrocinae'
'Hydranassa belongs to Ardeinae'
'Hydrotherikornis belongs to Nautilornithinae'
'Hydrotherikornis oregonus belongs to Hydrotherikornis'
'Hypomorphnus belongs to Buteoninae'
'Ichthyornidae is corrected as Ichthyornithidae and belongs to Ichthyornithiformes'
'Ichthyornis belongs to Ichthyornithidae'
'Ichthyornis dispar belongs to Ichthyornis'
'Ichthyornithes is corrected as Ichthyornithiformes and belongs to Odontognathae'
'Icteridae belongs to Passeres'
'Jabiru belongs to Ciconiinae'
'Laniidae belongs to Passeres'
'Laniinae belongs to Laniidae'
'Lanius belongs to Laniinae'
'Lanius ludovicianus belongs to Lanius'
'Lari belongs to Charadriiformes'
'Laridae belongs to Lari'
'Larinae belongs to Laridae'
'Larus belongs to Larinae'
'Larus (Larus) belongs to Larus' according to Linnaeus 1758
'Larus argentatus is recombined as Larus (Larus) argentatus'
'Larus glaucescens is recombined as Larus (Larus) glaucescens'
'Larus oregonus is recombined as Larus (Larus) oregonus'
'Larus pristinus is recombined as Larus (Larus) pristinus'
'Larus robustus is recombined as Larus (Larus) robustus'
'Larus sabini is recombined as Xema sabini'
'Lestornis crassipes is recombined as Hesperornis crassipes'
'Limicolavis belongs to Charadriinae'
'Limicolavis pluvianella belongs to Limicolavis'
'Lobipes belongs to Phalaropodidae'
'Lophodytes belongs to Merginae'
'Lophortyx belongs to Odontophorinae'
'Loxia belongs to Carduelinae'
'Loxia curvirostra belongs to Loxia'
'Mancalla belongs to Alcinae'
'Mancalla californiensis belongs to Mancalla'
'Mareca belongs to Anatinae'
'Melanitta belongs to Nyrocinae'
'Meleagridae belongs to Phasianoidea'
'Meleagris belongs to Meleagridae'
'Meleagris celer belongs to Meleagris'
'Meleagris gallopavo belongs to Meleagris'
'Meleagris richmondi belongs to Meleagris'
'Meleagris superbus belongs to Meleagris'
'Meleagris tridens belongs to Meleagris'
'Mergini was reranked as the subfamily Merginae and belongs to Anatidae'
'Mergus belongs to Merginae'
'Mergus cucullatus is recombined as Lophodytes cucullatus'
'Mergus serrator belongs to Mergus'
'Milvinae belongs to Accipitridae'
'Milvus leucurus is recombined as Elanus leucurus'
'Mimidae belongs to Passeres'
'Minerva saurodosis is recombined as Protostrix saurodosis'
'Miocepphus belongs to Alcinae'
'Miocepphus mcclungi belongs to Miocepphus'
'Miosula belongs to Sulidae'
'Miosula media belongs to Miosula'
'Moris reyana belongs to Moris'
'Morphnus belongs to Buteoninae'
'Morphnus daggetti is recombined as Wetmoregyps daggetti'
'Morphnus woodwardi belongs to Morphnus'
'Morus is corrected as Moris and belongs to Sulidae'
'Morus vagabundus is recombined as Moris vagabundus'
'Mycteria belongs to Mycteriinae'
'Mycteria wetmorei belongs to Mycteria'
'Mycterinae [misspelled as Mycteriinae] belongs to Ciconiidae'
'Nautilornis belongs to Nautilornithinae'
'Nautilornis avus belongs to Nautilornis'
'Nautilornis proavitus belongs to Nautilornis'
'Nautilornithinae belongs to Alcidae'
'Neognathae belongs to Neornithes'
'Neogyps belongs to Aegypiinae'
'Neogyps errans belongs to Neogyps'
'Neomorphinae belongs to Cuculidae'
'Neophrontops belongs to Aegypiinae'
'Neophrontops americanus belongs to Neophrontops'
'Neophrontops dakotensis belongs to Neophrontops' according to Compton 1935
'Neophrontops dakotensis belongs to Neophrontops'
'Neornithes belongs to Aves'
'Nettion belongs to Anatinae'
'Numeniinae belongs to Scolopacidae'
'Numenius belongs to Numeniinae'
'Numenius americanus belongs to Numenius'
'Nyctanassa belongs to Ardeinae'
'Nycticorax belongs to Ardeinae'
'Nyroca belongs to Nyrocinae'
'Nyroca (Nyroca) belongs to Nyroca' according to Flemming 1822
'Nyroca (Nyroca) belongs to Nyroca'
'Nyrocinae belongs to Anatidae'
'Odontognathae belongs to Neornithes'
'Odontophoridae was reranked as the subfamily Odontophorinae and belongs to Phasianidae'
'Omorhamphus belongs to Diatrymidae'
'Omorhamphus storchii belongs to Omorhamphus'
'Oreortyx belongs to Odontophorinae'
'Oreoscoptes belongs to Mimidae'
'Oriolus phoeniceus is recombined as Agelaius phoeniceus'
'Orpheus montanus belongs to Orpheus' according to Townsend 1837
'Orpheus montanus is recombined as Oreoscoptes montanus'
'Ortalis belongs to Penelopinae'
'Ortalis phengites belongs to Ortalis'
'Ortalis tantala belongs to Ortalis'
'Ortyx picta is recombined as Oreortyx picta'
'Otocoris belongs to Alaudidae'
'Otus belongs to Strigidae'
'Otus wilsonianus is recombined as Asio wilsonianus'
'Oxyechus belongs to Charadriinae'
'Pachycetus belongs to Archaeoceti'
'Pachycetus humilis belongs to Pachycetus'
'Pachycetus robustus belongs to Pachycetus'
'Palaealectoris belongs to Tetraonidae'
'Palaealectoris incertus belongs to Palaealectoris'
'Palaeoborus belongs to Aegypiinae'
'Palaeoborus howardae belongs to Palaeoborus' according to Wetmore 1936
'Palaeoborus howardae belongs to Palaeoborus'
'Palaeoborus rosatus belongs to Palaeoborus'
'Palaeochenoides belongs to Cyphornithidae'
'Palaeochenoides miocaenus belongs to Palaeochenoides'
'Palaeocrex belongs to Gallinulinae'
'Palaeocrex fax belongs to Palaeocrex'
'Palaeogyps belongs to Cathartidae'
'Palaeogyps prodromus belongs to Palaeogyps'
'Palaeophasianus belongs to Tetraonidae'
'Palaeophasianus meleagroides belongs to Palaeophasianus'
'Palaeoplancinae belongs to Accipitridae'
'Palaeoplancus belongs to Palaeoplancinae'
'Palaeoplancus sternbergi belongs to Palaeoplancus' according to Wetmore 1933
'Palaeorallus belongs to Rallinae'
'Palaeorallus troxelli belongs to Palaeorallus'
'Palaeospiza belongs to Palaeospizidae'
'Palaeospiza bella belongs to Palaeospiza'
'Palaeospiza hatcheri is recombined as Palaeostruthus hatcheri'
'Palaeospizidae belongs to Passeres'
'Palaeostruthus belongs to Emberizinae'
'Palaeotetrix belongs to Tetraonidae'
'Palaeotetrix gillii belongs to Palaeotetrix'
'Palaeotringa belongs to Palaeotringinae'
'Palaeotringa littoralis belongs to Palaeotringa'
'Palaeotringa vagans belongs to Palaeotringa'
'Palaeotringa vetus belongs to Palaeotringa'
'Palaeotringinae belongs to Scolopacidae'
'Pandion belongs to Pandionidae'
'Pandionidae belongs to Falconoidea'
'Paractiornis belongs to Haematopodidae'
'Paractiornis perpusillus belongs to Paractiornis'
'Paragrus belongs to Gruinae'
'Paranyroca belongs to Paranyrocidae'
'Paranyroca magna belongs to Paranyroca'
'Paranyrocidae belongs to Anseres'
'Parapavo belongs to Meleagridae'
'Parus fasciatus is recombined as Chamaea fasciata'
'Parus fasciatus belongs to Parus' according to Gambel 1845
'Passerella belongs to Emberizinae'
'Passeres belongs to Passeriformes'
'Passeriformes belongs to Neognathae'
'Pavo californicus is recombined as Parapavo californicus'
'Pediocaetes belongs to Tetraonidae'
'Pediocaetes lucasi belongs to Pediocaetes'
'Pediocaetes nanus belongs to Pediocaetes'
'Pelecani belongs to Pelecaniformes'
'Pelecanidae belongs to Pelecanoidea'
'Pelecaniformes belongs to Neognathae'
'Pelecanoidea belongs to Pelecani'
'Pelecanus belongs to Pelecanidae'
'Pelecanus erythrorhynchos is recombined as Pelecanus (Cyrtopelicanus) erythrorhynchos'
'Pelecanus halieus is recombined as Pelecanus (Cyrtopelicanus) halieus'
'Pelionetta was reranked as Melanitta (Pelionetta) and belongs to Melanitta'
'Penelopinae belongs to Cracidae'
'Petrochelidon belongs to Hirundinidae'
'Phalacrocoracidae belongs to Pelecanoidea'
'Phalacrocorax belongs to Phalacrocoracidae'
'Phalacrocorax femoralis belongs to Phalacrocorax'
'Phalacrocorax marinavis belongs to Phalacrocorax'
'Phalacrocorax mediterraneus belongs to Phalacrocorax'
'Phalacrocorax rogersi belongs to Phalacrocorax'
'Phalaropodidae belongs to Charadrioidea'
'Phasianidae belongs to Phasianoidea'
'Phasianinae belongs to Phasianidae'
'Phasianoidea belongs to Galli'
'Phasianus belongs to Phasianinae'
'Phasianus alfhildae belongs to Phasianus'
'Phasianus mioceanus is recombined as Archaeophasianus mioceanus'
'Phasianus roberti is recombined as Archaeophasianus roberti'
'Phasmagyps belongs to Cathartidae'
'Phasmagyps patritus belongs to Phasmagyps'
'Phloeotomus was reranked as Ceophloeus (Phloeotomus) and belongs to Ceophloeus'
'Phoenicopteri was reranked as a suborder and belongs to Ciconiiformes'
'Phoenicopteridae belongs to Phoenicopteri'
'Phoenicopterus belongs to Phoenicopteridae'
'Phoenicopterus copei belongs to Phoenicopterus'
'Pica belongs to Garrulinae'
'Picae is corrected as Pici and belongs to Piciformes'
'Picidae belongs to Pici'
'Piciformes belongs to Neognathae'
'Picinae belongs to Picidae'
'Picus cafer is recombined as Colaptes cafer'
'Picus lewis is recombined as Asyndesmus lewis'
'Picus pileatus is recombined as Ceophloeus (Phloeotomus) pileatus'
'Pipilo belongs to Emberizinae'
'Pipilo fusca is corrected as Pipilo fuscus and belongs to Pipilo'
'Pipilo maculatus belongs to Pipilo'
'Platalea ajaja is recombined as Ajaia ajaja'
'Plataleinae belongs to Threskiornithidae'
'Plegadis belongs to Threskiornithinae'
'Pliolunda belongs to Alcinae'
'Pliolunda diegense belongs to Pliolunda'
'Plotus anhinga is recombined as Anhinga anhinga'
'Podiceps nigricollis is recombined as Colymbus (Dytes) nigricollis'
'Podiceps occidentalis is recombined as Aechmophorus occidentalis'
'Podilymbus belongs to Colymbidae'
'Polyborinae belongs to Falconidae'
'Polyborus belongs to Polyborinae'
'Polyborus prelutosus belongs to Polyborus'
'Polyborus prelutosus prelutosus belongs to Polyborus prelutosus' according to Howard 1938
'Polyborus prelutosus prelutosus belongs to Polyborus prelutosus'
'Polysticta belongs to Nyrocinae'
'Presbychen belongs to Anserinae'
'Presbychen abavus belongs to Presbychen'
'Presbyornis belongs to Presbyornithidae'
'Presbyornis pervetus belongs to Presbyornis'
'Presbyornithidae belongs to Charadrioidea'
'Procellaria glacialis is recombined as Fulmarus glacialis'
'Procellaria grisea is recombined as Puffinus (Puffinus) griseus'
'Procellaria puffinus is recombined as Puffinus (Puffinus) puffinus'
'Procellariidae belongs to Procellariiformes'
'Procellariiformes belongs to Neognathae'
'Proictinia belongs to Milvinae'
'Proictinia effera belongs to Proictinia'
'Proictinia gilmorei belongs to Proictinia'
'Protostrix belongs to Protostrigidae'
'Protostrix mimica is recombined as Eostrix mimica'
'Psittacidae belongs to Psittaciformes'
'Psittaciformes belongs to Neognathae'
'Puffinus belongs to Procellariidae'
'Puffinus (Puffinus) belongs to Puffinus' according to Brisson 1760
'Puffinus conradi is recombined as Puffinus (Ardenna) conradi'
'Puffinus diatomicus is recombined as Puffinus (Puffinus) diatomicus'
'Puffinus inceptor is recombined as Puffinus (Puffinus) inceptor'
'Puffinus opisthomelas is recombined as Puffinus (Puffinus) opisthomelas'
'Pyelorhamphus belongs to Icteridae'
'Pyelorhamphus molothroides belongs to Pyelorhamphus'
'Querquedula belongs to Anatinae'
'Querquedula floridiana [misspelled as Querquedula floridana] belongs to Querquedula'
'Quiscalus belongs to Icteridae'
'Rallidae belongs to Ralloidea'
'Rallinae belongs to Rallidae'
'Ralloidea belongs to Grues'
'Rallus belongs to Rallinae'
'Rallus elegans belongs to Rallus'
'Rallus limicola belongs to Rallus'
'Rallus longirostris belongs to Rallus'
'Recurvirostra belongs to Recurvirostridae'
'Recurvirostra americana belongs to Recurvirostra'
'Recurvirostridae belongs to Charadrioidea'
'Rhynchodon was reranked as Falco (Rhynchodon) and belongs to Falco'
'Sarcoramphus belongs to Cathartidae'
'Sarcorhamphus clarki is recombined as Breagyps clarki'
'Saurothera californiana is recombined as Geococcyx californianus'
'Scolecophagus affinis is recombined as Euphagus affinis'
'Scolopacidae belongs to Charadrioidea'
'Scolopacinae belongs to Scolopacidae'
'Scolopax alba is recombined as Guara alba'
'Scolopax delicata is recombined as Capella delicata'
'Scolopax guarauna is recombined as Plegadis guarauna'
'Scolopax melanoleuca is recombined as Totanus melanoleucus'
'Sialia belongs to Turdidae'
'Sialia mexicana belongs to Sialia' according to Swainson 1831
'Sialia mexicana belongs to Sialia'
'Sitta belongs to Sittinae'
'Sitta canadensis belongs to Sitta'
'Sitta pygmaea belongs to Sitta' according to Vigors 1839
'Sitta pygmaea belongs to Sitta'
'Sittidae belongs to Passeres'
'Sittinae belongs to Sittidae'
'Spatula belongs to Anatinae'
'Speotyto belongs to Strigidae'
'Spinus belongs to Carduelinae'
'Spizaetus belongs to Buteoninae'
'Spizaetus willetti belongs to Spizaetus' according to Howard 1935
'Spizella belongs to Emberizinae'
'Squatarola belongs to Charadriinae'
'Sterna nigra is recombined as Chlidonias nigra'
'Sterna philadelphia is recombined as Larus (Chroicocephalus) philadelphia'
'Sterninae belongs to Laridae'
'Strigidae belongs to Strigiformes'
'Strigiformes belongs to Neognathae'
'Strix belongs to Strigidae'
'Strix acadica is recombined as Cryptoglaux acadica'
'Strix alba is recombined as Tyto alba'
'Strix asio is recombined as Otus asio'
'Strix brea belongs to Strix'
'Strix cunicularia is recombined as Speotyto cunicularia'
'Strix flammea is recombined as Asio flammeus'
'Strix flammeola belongs to Strix' according to Kaup 1853
'Strix flammeola is recombined as Otus flammeolus'
'Strix varius is corrected as Strix varia and belongs to Strix'
'Strix virginiana is recombined as Bubo virginianus'
'Sturnella belongs to Icteridae'
'Sturnella neglecta belongs to Sturnella'
'Sula belongs to Sulidae'
'Sula (Microsula) belongs to Sula'
'Sula (Microsula) avita belongs to Sula (Microsula)'
'Sula (Sula) belongs to Sula' according to Brisson 1760
'Sula lompocanus is recombined as Moris lompocana'
'Sula loxostyla is recombined as Moris loxostyla'
'Sula stocktoni is recombined as Sula (Sula) stocktoni'
'Sula willetti is recombined as Sula (Sula) willetti'
'Sulidae belongs to Suloidea'
'Suloidae is corrected as Suloidea and belongs to Pelecani'
'Synthliboramphus belongs to Alcinae'
'Tantalus pictus is recombined as Aramus pictus'
'Telmatornis belongs to Rallinae'
'Telmatornis affinis belongs to Telmatornis'
'Telmatornis priscus belongs to Telmatornis'
'Telmatornis rex belongs to Telmatornis'
'Teratornis belongs to Teratornithidae'
'Teratornis merriami belongs to Teratornis'
'Teratornithidae belongs to Cathartae'
'Tetrao californicus is recombined as Lophortyx californica'
'Tetrao obscurus is recombined as Dendragapus obscurus'
'Tetrao phasianellus is recombined as Pediocaetes phasianellus'
'Tetrao umbellus is recombined as Bonasa umbellus'
'Tetrao urophasianus is recombined as Centrocercus urophasianus'
'Tetrao virginianus is recombined as Colinus virginianus'
'Tetraonidae belongs to Phasianoidea'
'Threskiornithidae belongs to Threskiornithoidea'
'Threskiornithinae belongs to Threskiornithidae'
'Threskiornithoidea belongs to Ciconiae'
'Tinnunculus was reranked as Falco (Tinnunculus) and belongs to Falco'
'Totanus belongs to Numeniinae'
'Toxostoma belongs to Mimidae'
'Tringa lobata is recombined as Lobipes lobatus'
'Tringa squatarola is recombined as Squatarola squatarola'
'Triorchis was reranked as Buteo (Triorchis) and belongs to Buteo'
'Turdidae belongs to Passeres'
'Turdus belongs to Turdidae'
'Turdus migratorius belongs to Turdus'
'Tympanuchus belongs to Tetraonidae'
'Tympanuchus lulli belongs to Tympanuchus'
'Tyto belongs to Tytonidae'
'Tytonidae belongs to Strigiformes'
'Uria belongs to Alcinae'
'Urubitinga enecta is recombined as Hypomorphnus enecta'
'Urubitinga milleri belongs to Urubitinga' according to Howard 1932
'Urubitinga milleri is recombined as Hypomorphnus milleri'
'Vultur atratus is recombined as Coragyps atratus'
'Vultur aura is recombined as Cathartes aura'
'Vultur californianus is recombined as Gymnogyps californianus'
'Vultur kernensis is recombined as Sarcoramphus kernensis'
'Wetmoregyps belongs to Buteoninae'
'Xema belongs to Larinae'