Phylum: Chordates (Cordata)
Class: Birds (Aves)
Family: Herons, Bitterns (Ardeidae)
Family: Gulls, Terns and Skimmers (Laridae)
Family: Petrels and Shearwaters (Procellariidae)
Family: Auks (Alcidae)
Family: Pelicans (Pelicanidae)
Family: Gannets and Boobies (Sulidae)
Family: Frigatebirds (Fregatidae)
Family: Flamingoes (Phoenicopteridae)
Family: Tropicbirds (Phaethontidae)
Family: Cormorants and Shags (Phalacrocoracidae)
Family: Penguins (Spheniscidae)
Family: Austral Storm petrels (Oceanitidae)
Family: Barn owls (Tytonidae)
Family: Sandpipers and Snipes (Scolopacidae)
Family: Plovers (Charadriidae)
Family: Rails, Crakes and Coots (Rallidae)
Family: Oystercatchers (Haematopodidae)
Family: Kingfishers (Alcedinidae)
Family: Pigeons and Doves (Columbidae)
Family: Parrots (Psittacidae)
Family: Hoatzins (Opisthocomidae)
Family: Toucans (Ramphastidae)
Family: Caracaras and Falcons (Falconidae)
Family: Longspurs and Snow buntings (Calcariidae)
Family: New world warblers (Parulidae)
Family: Mockingbirds and Thrashers (Mimidae)
Family: Tanagers and allies (Thraupidae)
Family: Oropendolas, Orioles and Blackbirds (Icteridae)
Family: Tyrant flycatchers (Tyrannidae)
Family: Swallows and Martins (Hirundinidae)
Family: Ducks, Geese and Swans (Anatidae)
Family: Grebes (Podicipedidae)
Family: Hummingbirds (Trochilidae)
Family: Bananaquits (Coerebidae)
Family: Cuckoos (Cuculidae)
Family: Birds of paradise (Paradisaeidae)
Family: Loons (Gaviidae)
Family: Thrushes (Turdidae)
Family: Wagtails, longclaws and pipits (Motacillidae)
Family: Fowls and pheasants (Phasianidae)
Family: Skuas (Stercorariidae)
Family: True Owls (Strigidae)
Family: Crows and Jays (Corvidae)
Family: Hawks, eagles and kites (Accipitridae)