Opinions from B. C. Livezey and R. L. Zusi 2007

  • 'Accipitres belongs to Falconiformes'
  • 'Accipitridae belongs to Accipitroidea'
  • 'Accipitrinae belongs to Accipitridae'
  • 'Accipitroidea belongs to Falconides'
  • 'Acryllium belongs to Numidinae'
  • 'Aegotheli belongs to Caprimulgiformes'
  • 'Aegothelidae belongs to Aegotheli'
  • 'Aepyornithidae belongs to Aepyornithiformes'
  • 'Aepyornithiformes belongs to Struthionimorphae'
  • 'Alcedinidae belongs to Alcedinoidea'
  • 'Alcedininae belongs to Alcedinidae'
  • 'Alcedinoidea belongs to Halcyones'
  • 'Alcidae belongs to Alcides'
  • 'Alcides belongs to Lari'
  • 'Anatidae belongs to Anatoidea'
  • 'Anatinae belongs to Anatidae'
  • 'Anatoidea belongs to Anseres'
  • 'Anhimae belongs to Anseriformes'
  • 'Anhimidae belongs to Anhimae'
  • 'Anhingidae belongs to Phalacrocoracoidea'
  • 'Anomalogonates belongs to Dendrornithes'
  • 'Anomalopterygidae belongs to Dinornithiformes'
  • 'Anseranatidae belongs to Anseranatoidea'
  • 'Anseranatoidea belongs to Anseres'
  • 'Anseres belongs to Anseriformes'
  • 'Anseriformes belongs to Galloanserimorphae'
  • 'Anserimorphae is an invalid subgroup of Galloanserimorphae'
  • 'Anserinae belongs to Anatidae'
  • 'Apodi belongs to Apodiformes'
  • 'Apodidae belongs to Apodi'
  • 'Apodiformes belongs to Cypselomorphae'
  • 'Apodinae belongs to Apodidae'
  • 'Apsaravidae belongs to Apsaraviformes'
  • 'Apsaraviformes belongs to Euenantiornithes'
  • 'Apterygidae belongs to Apterygiformes'
  • 'Apterygiformes belongs to Apterygimorphae'
  • 'Apterygimorphae belongs to Ratitae'
  • 'Aptornithidae is corrected as Apterornithidae and belongs to Rhynochetides'
  • 'Aramidae belongs to Gruioidea'
  • 'Archaeopterygidae belongs to Archaeopterygiformes'
  • 'Archaeopterygiformes belongs to Archaeornithes'
  • 'Archaeornithes was reranked as a superorder and belongs to Palaeoaves'
  • 'Ardeidae belongs to Ardeiformes'
  • 'Ardeiformes belongs to Ciconiimorphae'
  • 'Ardeinae belongs to Ardeidae'
  • 'Ardeini belongs to Ardeinae'
  • 'Aves was reranked as a infraclass and belongs to Avialae'
  • 'Balaeniceps belongs to Balaenicipitidae'
  • 'Balaenicipites belongs to Balaenicipitiformes'
  • 'Balaenicipitidae belongs to Balaenicipites'
  • 'Balaenicipitiformes belongs to Pelecanimorphae'
  • 'Bathornithidae belongs to Cariamoidea'
  • 'Bombycilla belongs to Bombycillidae'
  • 'Bombycillidae belongs to Passerida'
  • 'Botaurinae belongs to Ardeidae'
  • 'Botaurini belongs to Botaurinae'
  • 'Brachypteraciidae belongs to Coraciides'
  • 'Bucconidae belongs to Galbulae'
  • 'Bucerotes belongs to Coraciiformes'
  • 'Bucerotidae belongs to Bucerotides'
  • 'Bucerotides belongs to Bucerotes'
  • 'Burhinidae belongs to Burhinoidea'
  • 'Burhinoidea belongs to Charadriides'
  • 'Cacatuidae belongs to Psittaciformes'
  • 'Capitonidae belongs to Capitonoidea'
  • 'Capitonoidea belongs to Pici'
  • 'Caprimulgi belongs to Caprimulgiformes'
  • 'Caprimulgidae belongs to Caprimulgi'
  • 'Caprimulgiformes belongs to Cypselomorphae'
  • 'Cariamae belongs to Gruiformes'
  • 'Cariamidae belongs to Cariamoidea'
  • 'Cariamides belongs to Cariamae'
  • 'Cariamoidea belongs to Cariamides'
  • 'Casuariidae belongs to Casuariiformes'
  • 'Casuariiformes belongs to Casuariimorphae'
  • 'Casuariimorphae belongs to Ratitae'
  • 'Cathartae belongs to Falconiformes'
  • 'Cathartidae belongs to Cathartae'
  • 'Centropodinae belongs to Cuculidae'
  • 'Charadriidae belongs to Charadrioidea'
  • 'Charadriides belongs to Limicolae'
  • 'Charadriiformes belongs to Charadriimorphae'
  • 'Charadriimorphae belongs to Telmatorae'
  • 'Charadrioidea belongs to Charadriides'
  • 'Chionididae belongs to Chionidides'
  • 'Chionidides belongs to Lari'
  • 'Ciconiae belongs to Ciconiiformes'
  • 'Ciconiidae belongs to Ciconioidea'
  • 'Ciconiiformes belongs to Ciconiimorphae'
  • 'Ciconiimorphae belongs to Steganograllatores'
  • 'Ciconioidea belongs to Ciconiae'
  • 'Cladorhynchini belongs to Himantopodinae'
  • 'Cladorhynchus belongs to Cladorhynchini'
  • 'Coccyges belongs to Anomalogonates'
  • 'Cochleariidae belongs to Ardeiformes'
  • 'Coliidae belongs to Coliiformes'
  • 'Coliiformes belongs to Trogonomorphae'
  • 'Colius belongs to Coliidae'
  • 'Columbae belongs to Columbiformes'
  • 'Columbidae belongs to Columbae'
  • 'Columbiformes belongs to Psittacimorphae'
  • 'Columbinae belongs to Columbidae'
  • 'Confuciusornithidae belongs to Confuciusornithiformes'
  • 'Confuciusornithiformes belongs to Archaeornithes'
  • 'Coracii belongs to Coraciiformes'
  • 'Coraciidae belongs to Coracioidea'
  • 'Coraciides belongs to Coracii'
  • 'Coraciiformes belongs to Passerimorphae'
  • 'Coracioidea belongs to Coraciides'
  • 'Corvida belongs to Passerides'
  • 'Corvidae belongs to Corvida'
  • 'Craci belongs to Galliformes'
  • 'Cracidae belongs to Cracoidea'
  • 'Cracoidea belongs to Craci'
  • 'Crotophaginae belongs to Cuculidae'
  • 'Crypturi belongs to Palaeognathae'
  • 'Cuculi belongs to Cuculiformes'
  • 'Cuculidae belongs to Cuculi'
  • 'Cuculiformes belongs to Cuculimorphae'
  • 'Cuculimorphae belongs to Coccyges'
  • 'Cuculinae belongs to Cuculidae'
  • 'Cursoriinae belongs to Glareolidae'
  • 'Cypselinae belongs to Apodidae'
  • 'Cypselomorphae belongs to Incessores'
  • 'Dendrornithes belongs to Terrestrornithes'
  • 'Diatrymae is corrected as Diatrymiformes and belongs to Galloanserimorphae'
  • 'Diatrymidae is corrected as Diatrymatidae and belongs to Diatrymiformes'
  • 'Didunculinae belongs to Columbidae'
  • 'Didunculus belongs to Didunculinae'
  • 'Dinornithidae belongs to Dinornithiformes'
  • 'Dinornithiformes belongs to Apterygimorphae'
  • 'Diomedeidae belongs to Procellaroidea'
  • 'Dromadidae is corrected as Dromatidae and belongs to Dromaides'
  • 'Dromaeomorphae belongs to Crypturi'
  • 'Dromaides belongs to Limicolae'
  • 'Dromaiidae belongs to Casuariiformes'
  • 'Dromornithidae belongs to Dromornithiformes'
  • 'Dromornithiformes belongs to Galloanserimorphae'
  • 'Eoaves belongs to Aves'
  • 'Euenantiornithes belongs to Palaeoaves'
  • 'Eurypygae belongs to Gruiformes'
  • 'Eurypygidae belongs to Eurypygides'
  • 'Eurypygides belongs to Eurypygae'
  • 'Falconidae belongs to Falconoidea'
  • 'Falconides belongs to Accipitres'
  • 'Falconiformes belongs to Falconimorphae'
  • 'Falconimorphae belongs to Raptores'
  • 'Falconinae belongs to Falconidae'
  • 'Falconoidea belongs to Falconides'
  • 'Fregata belongs to Fregatidae'
  • 'Fregatidae belongs to Fregatoidea'
  • 'Fregatides belongs to Steganopodes'
  • 'Fregatoidea belongs to Fregatides'
  • 'Galbulae belongs to Piciformes'
  • 'Galbulidae belongs to Galbulae'
  • 'Galliformes belongs to Galloanserimorphae'
  • 'Galloanserae belongs to Neognathae'
  • 'Galloanserimorphae belongs to Galloanserae'
  • 'Gallus belongs to Phasianidae'
  • 'Gaviidae belongs to Gaviiformes'
  • 'Gaviiformes belongs to Gaviomorphae'
  • 'Gaviomorphae belongs to Pygopodotubinares'
  • 'Glareolidae belongs to Glareoloidea'
  • 'Glareolinae belongs to Glareolidae'
  • 'Glareoloidea belongs to Charadriides'
  • 'Goura belongs to Gourinae'
  • 'Gourinae belongs to Columbidae'
  • 'Grues belongs to Gruiformes'
  • 'Gruidae belongs to Gruioidea'
  • 'Gruiformes belongs to Charadriimorphae'
  • 'Gruioidea is corrected as Gruoidea and belongs to Grues'
  • 'Gypaetinae belongs to Accipitridae'
  • 'Haematopodidae [misspelled as Haematopidae] belongs to Haematopoidea'
  • 'Haematopodinae belongs to Haematopidae'
  • 'Haematopoidea belongs to Charadriides'
  • 'Halcyones belongs to Coraciiformes'
  • 'Halcyoninae belongs to Alcedinidae'
  • 'Heliornithidae belongs to Ralliformes'
  • 'Hemiprocni belongs to Apodiformes'
  • 'Hemiprocnidae belongs to Hemiprocni'
  • 'Hesperornidae is corrected as Hesperornithidae and belongs to Hesperornithiformes'
  • 'Hesperornithiformes belongs to Odontoholomorphae'
  • 'Heteroscelus belongs to Scolopacidae'
  • 'Himantopodinae belongs to Recurvirostridae'
  • 'Himantopodini belongs to Himantopodinae'
  • 'Ibidorhynchinae belongs to Haematopidae'
  • 'Ibidorhynchus belongs to Ibidorhynchinae'
  • 'Ichthyornidae is corrected as Ichthyornithidae and belongs to Ichthyornithiformes'
  • 'Ichthyornithes is corrected as Ichthyornithiformes and belongs to Odontoholomorphae'
  • 'Incessores belongs to Anomalogonates'
  • 'Indicatoridae belongs to Picoidea'
  • 'Jacanidae is corrected as Jaccanidae and belongs to Parrae'
  • 'Jynginae belongs to Picidae'
  • 'Lari belongs to Charadriiformes'
  • 'Laridae belongs to Laroidea'
  • 'Larides belongs to Lari'
  • 'Larinae belongs to Laridae'
  • 'Laroidea belongs to Larides'
  • 'Leptosomatoidea belongs to Coraciides'
  • 'Leptosomidae belongs to Leptosomatoidea'
  • 'Leptosomus belongs to Leptosomatidae'
  • 'Limicolae belongs to Charadriiformes'
  • 'Lithornis belongs to Lithornithidae'
  • 'Lithornithidae belongs to Lithornithiformes'
  • 'Lithornithiformes belongs to Eoaves'
  • 'Loriinidae belongs to Psittaciformes'
  • 'Megapodidae is corrected as Megapodiidae and belongs to Megapodioidea'
  • 'Megapodioidea belongs to Craci'
  • 'Meleagrididae belongs to Meleagridoidea'
  • 'Meleagridoidea belongs to Phasiani'
  • 'Menura belongs to Menuridae'
  • 'Menurae belongs to Passeriformes'
  • 'Menuridae belongs to Menurae'
  • 'Meropidae belongs to Meropides'
  • 'Meropides belongs to Coracii'
  • 'Mesitornithidae belongs to Turniciformes'
  • 'Momotidae is corrected as Motmotidae and belongs to Motmotoidea'
  • 'Motmotoidea belongs to Halcyones'
  • 'Musophagi belongs to Cuculiformes'
  • 'Musophagidae belongs to Musophagi'
  • 'Natatores belongs to Neoaves'
  • 'Neoaves belongs to Neognathae'
  • 'Neognathae was reranked as a unranked clade and belongs to Neornithes'
  • 'Neomorphinae belongs to Cuculidae'
  • 'Neornithes was reranked as a unranked clade and belongs to Aves'
  • 'Nestoridae belongs to Psittaciformes'
  • 'Numida belongs to Numidinae'
  • 'Numididae was reranked as the subfamily Numidinae and belongs to Phasianidae'
  • 'Nyctibiidae belongs to Caprimulgi'
  • 'Nycticoracinae was reranked as the subfamily Nycticoracini and belongs to Ardeinae'
  • 'Oceanitidae belongs to Oceanitoidea'
  • 'Oceanitoidea belongs to Procellarae'
  • 'Odontoholomorphae belongs to Ornithurae'
  • 'Odontophoridae was reranked as the family Odontophorinae and belongs to Phasianidae'
  • 'Odontopterygidae belongs to Odontopterygiformes'
  • 'Odontopterygiformes belongs to Pelecanimorphae'
  • 'Opisthocomidae belongs to Opisthocomiformes'
  • 'Opisthocomiformes belongs to Cuculimorphae'
  • 'Opisthocomus belongs to Opisthocomidae'
  • 'Ornithurae was reranked as a unranked clade and belongs to Aves'
  • 'Otides belongs to Cariamae'
  • 'Otididae belongs to Otides'
  • 'Pachyptilinae belongs to Procellariidae'
  • 'Palaeoaves belongs to Aves'
  • 'Palaeognathae was reranked as a superorder and belongs to Neornithes'
  • 'Pandion belongs to Pandionidae'
  • 'Pandionidae belongs to Falconoidea'
  • 'Paridae belongs to Passerida'
  • 'Parrae belongs to Charadriiformes'
  • 'Parus belongs to Paridae'
  • 'Passer belongs to Passeridae'
  • 'Passeres belongs to Passeriformes'
  • 'Passerida belongs to Passerides'
  • 'Passeridae belongs to Passerida'
  • 'Passerides belongs to Passeres'
  • 'Passeriformes belongs to Passerimorphae'
  • 'Passerimorphae belongs to Picoclamatores'
  • 'Pedionomae belongs to Charadriiformes'
  • 'Pedionomidae belongs to Pedionomae'
  • 'Pelecanida belongs to Pelecanides'
  • 'Pelecanidae belongs to Pelecanida'
  • 'Pelecanides belongs to Steganopodes'
  • 'Pelecaniformes belongs to Pelecanimorphae'
  • 'Pelecanimorphae belongs to Steganograllatores'
  • 'Pelecanoidi belongs to Procellariiformes'
  • 'Pelecanoididae belongs to Pelecanoidi'
  • 'Perdicinae belongs to Phasianidae'
  • 'Pezophaps belongs to Raphidae'
  • 'Phaenicophacinae belongs to Cuculidae'
  • 'Phaethontes belongs to Pelecaniformes'
  • 'Phaethontidae belongs to Phaethontes'
  • 'Phalacrocoracidae belongs to Phalacrocoracoidea'
  • 'Phalacrocoracoidea belongs to Sulida'
  • 'Phalaropodidae belongs to Scolopacoidea'
  • 'Phasiani belongs to Galliformes'
  • 'Phasianidae belongs to Phasianoidea'
  • 'Phasianinae belongs to Phasianidae'
  • 'Phasianoidea belongs to Phasiani'
  • 'Phodilinae belongs to Tytonidae'
  • 'Phodilus belongs to Phodilinae'
  • 'Phoenicopteridae belongs to Ciconioidea'
  • 'Phoenicopteriformes is an invalid subgroup of Ciconioidea'
  • 'Phoeniculidae belongs to Upupides'
  • 'Phororhacosidae is corrected as Phorusrhacidae and belongs to Cariamoidea'
  • 'Picae is corrected as Pici and belongs to Piciformes'
  • 'Picidae belongs to Picoidea'
  • 'Piciformes belongs to Passerimorphae'
  • 'Picinae belongs to Picidae'
  • 'Picoclamatores belongs to Anomalogonates'
  • 'Picoidea belongs to Pici'
  • 'Pittidae belongs to Tyrannides'
  • 'Plataleidae belongs to Threskiornithoidea'
  • 'Podargidae belongs to Caprimulgi'
  • 'Podicipedidae belongs to Podicipediformes'
  • 'Podicipediformes belongs to Gaviomorphae'
  • 'Polyborinae belongs to Falconidae'
  • 'Presbyornithidae belongs to Anatoidea'
  • 'Procellarae belongs to Procellariiformes'
  • 'Procellariidae belongs to Procellaroidea'
  • 'Procellariiformes belongs to Procellariimorphae'
  • 'Procellariimorphae belongs to Pygopodotubinares'
  • 'Procellariinae belongs to Procellariidae'
  • 'Procellaroidea [misspelled as Procellarioidea] belongs to Procellarae'
  • 'Psittacidae belongs to Psittaciformes'
  • 'Psittaciformes belongs to Psittacimorphae'
  • 'Psittacimorphae belongs to Coccyges'
  • 'Psophiidae belongs to Psophioidea'
  • 'Psophioidea belongs to Grues'
  • 'Pterocletes belongs to Columbiformes'
  • 'Pteroclidae belongs to Pterocletes'
  • 'Ptilonorhynchidae belongs to Corvida'
  • 'Pygopodotubinares belongs to Natatores'
  • 'Rahonavidae belongs to Rahonaviformes'
  • 'Rahonaviformes belongs to Euenantiornithes'
  • 'Rallidae belongs to Ralliformes'
  • 'Ralliformes belongs to Charadriimorphae'
  • 'Raphidae belongs to Columbae'
  • 'Raphus belongs to Raphidae'
  • 'Raptores belongs to Dendrornithes'
  • 'Ratitae was reranked as a unranked clade and belongs to Palaeognathae'
  • 'Recurvirostridae belongs to Haematopoidea'
  • 'Recurvirostrinae belongs to Recurvirostridae'
  • 'Rhamphastidae belongs to Capitonoidea'
  • 'Rheidae belongs to Struthioniformes'
  • 'Rheiformes is a subjective synonym of Struthioniformes'
  • 'Rhynchopidae belongs to Rhynchopoidea'
  • 'Rhynchopoidea belongs to Larides'
  • 'Rhynochetidae belongs to Rhynochetides'
  • 'Rhynochetides belongs to Eurypygae'
  • 'Rostratulidae belongs to Parrae'
  • 'Sagittariidae belongs to Serpentariides'
  • 'Sagittarius belongs to Sagittariidae'
  • 'Sandcoleidae belongs to Sandcoleiformes'
  • 'Sandcoleiformes belongs to Trogonomorphae'
  • 'Scolopacidae belongs to Scolopacoidea'
  • 'Scolopacides belongs to Limicolae'
  • 'Scolopacoidea belongs to Scolopacides'
  • 'Scopi belongs to Ciconiiformes'
  • 'Scopidae belongs to Scopi'
  • 'Scopus belongs to Scopidae'
  • 'Serpentariides belongs to Accipitres'
  • 'Spheniscidae belongs to Sphenisciformes'
  • 'Sphenisciformes belongs to Procellariimorphae'
  • 'Steatornis belongs to Steatornithidae'
  • 'Steatornithidae belongs to Caprimulgi'
  • 'Steganograllatores belongs to Natatores'
  • 'Steganopodes belongs to Pelecaniformes'
  • 'Stercorariidae belongs to Laroidea'
  • 'Sterninae belongs to Laridae'
  • 'Strigidae belongs to Strigiformes'
  • 'Strigiformes belongs to Falconimorphae'
  • 'Struthionidae belongs to Struthioniformes'
  • 'Struthioniformes belongs to Struthionimorphae'
  • 'Struthionimorphae belongs to Ratitae'
  • 'Sulae was reranked as the unranked clade Sulida and belongs to Pelecanides'
  • 'Sulidae belongs to Suloidea'
  • 'Suloidea belongs to Sulida'
  • 'Sylviornithidae belongs to Megapodioidea'
  • 'Telmatorae belongs to Terrestrornithes'
  • 'Teratornithi belongs to Falconiformes'
  • 'Terrestrornithes belongs to Neoaves'
  • 'Tetraonidae was reranked as the subfamily Tetraoninae and belongs to Phasianidae'
  • 'Thinocoridae belongs to Thinocoroidea'
  • 'Thinocoroidea belongs to Scolopacides'
  • 'Threskiornithidae belongs to Threskiornithoidea'
  • 'Threskiornithoidea belongs to Ciconiae'
  • 'Tigriornithini belongs to Botaurinae'
  • 'Tigrisoma belongs to Tigriornithini'
  • 'Tinamidae belongs to Tinamiformes'
  • 'Tinamiformes belongs to Dromaeomorphae'
  • 'Todidae belongs to Alcedinoidea'
  • 'Trochilidae belongs to Apodi'
  • 'Trogones belongs to Anomalogonates'
  • 'Trogonidae belongs to Trogoniformes'
  • 'Trogoniformes belongs to Trogonomorphae'
  • 'Trogonomorphae belongs to Trogones'
  • 'Turnicidae belongs to Turniciformes'
  • 'Turniciformes belongs to Charadriimorphae'
  • 'Tyrannidae belongs to Tyrannides'
  • 'Tyrannides belongs to Passeres'
  • 'Tytonidae belongs to Strigiformes'
  • 'Tytoninae belongs to Tytonidae'
  • 'Upupidae belongs to Upupides'
  • 'Upupides belongs to Bucerotes'
  • 'Upupiformes is an invalid subgroup of Upupides'
  • 'Vulturidae is a subjective synonym of Cathartidae'