Opinions from S. L. Olson 1975
- 'Aegialitis sanctaehelenae belongs to Aegialitis' according to Harting 1873
- 'Aegialitis sanctaehelenae is recombined as Charadrius sanctaehelenae'
- 'Anous belongs to Laridae'
- 'Anous tenuirostris belongs to Anous' according to Temminck 1873
- 'Atagen ariel belongs to Atagen' according to Gray 1845
- 'Atagen ariel is recombined as Fregata ariel'
- 'Atlantisia belongs to Rallidae'
- 'Bulweria belongs to Procellariidae'
- 'Bulweria bifax belongs to Bulweria'
- 'Charadriidae belongs to Charadriiformes'
- 'Charadrius belongs to Charadriidae'
- 'Columbidae belongs to Columbiformes'
- 'Cuculidae belongs to Cuculiformes'
- 'Dysmoropelia belongs to Columbidae'
- 'Dysmoropelia dekarchiskos belongs to Dysmoropelia'
- 'Fregata belongs to Fregatidae'
- 'Fregatidae belongs to Pelecaniformes'
- 'Fulica chloropus is recombined as Gallinula chloropus'
- 'Gallinula belongs to Rallidae'
- 'Gygis belongs to Laridae'
- 'Laridae belongs to Charadriiformes'
- 'Larus belongs to Laridae'
- 'Nannococcyx belongs to Cuculidae'
- 'Nannococcyx psix belongs to Nannococcyx'
- 'Oceanitidae belongs to Procellariiformes'
- 'Oceanodroma belongs to Oceanitidae'
- 'Pelagodroma belongs to Oceanitidae'
- 'Pelecanus leucogaster belongs to Pelecanus' according to Boddaert 1783
- 'Pelecanus leucogaster is recombined as Sula leucogaster'
- 'Pelecanus minor belongs to Pelecanus' according to Gmelin 1789
- 'Pelecanus minor is recombined as Fregata minor'
- 'Pelecanus sula belongs to Pelecanus' according to Linnaeus 1766
- 'Pelecanus sula is recombined as Sula sula'
- 'Phaethon belongs to Phaethontidae'
- 'Phaethon aethereus belongs to Phaethon'
- 'Phaethontidae belongs to Pelecaniformes'
- 'Porzana belongs to Rallidae'
- 'Procellaria grisea is recombined as Puffinus griseus'
- 'Procellaria marina is recombined as Pelagodroma marina'
- 'Procellariidae belongs to Procellariiformes'
- 'Pterodroma belongs to Procellariidae'
- 'Pterodroma rupinarum belongs to Pterodroma'
- 'Puffinus belongs to Procellariidae'
- 'Puffinus lherminieri belongs to Puffinus'
- 'Rallidae belongs to Gruiformes'
- 'Sterna belongs to Laridae'
- 'Sterna alba is recombined as Gygis alba'
- 'Sterna alba belongs to Sterna' according to Sparman 1786
- 'Sterna fuscata belongs to Sterna' according to Linnaeus 1766
- 'Sterna stolida is recombined as Anous stolidus'
- 'Sula belongs to Sulidae'
- 'Sula dactylatra belongs to Sula'
- 'Sulidae belongs to Pelecaniformes'
- 'Thalassidroma castro is recombined as Oceanodroma castro'
- 'Upupa belongs to Upupidae'
- 'Upupa antaios belongs to Upupa'
- 'Upupidae belongs to Coraciiformes'