La classe degli Uccelli (Aves)
Accipitriformes
Pandionidae
Accipitridae
Anseriformes
Anatidae
Apodiformes
Apodidae
Bucerotiformes
Upupidae
Caprimulgiformes
Caprimulgidae
Charadriiformes
Alcidae
Burhinidae
Charadriidae
Glareolidae
Haematopodidae
Laridae
Recurvirostridae
Scolopacidae
Stercorariidae
Turnicidae
Ciconiformes
Ciconiidae
Columbiformes
Columbidae
Coraciformes
Alcedinidae
Coraciidae
Meropidae
Cuculiformes
Cuculidae
Falconiformes
Falconidae
Galliformes
Phasianidae
Gaviformes
Gaviidae
Gruiformes
Rallidae
Gruidae
Otidiformes
Otididae
Passeriformes
Acrocephalidae
Aegithalidae
Alaudidae
Bombycillidae
Calcariidae
Certhiidae
Cettiidae
Cinclidae
Cisticolidae
Corvidae
Emberizidae
Fringillidae
Hirundinidae
Laniidae
Locustellidae
Motacillidae
Muscicapidae
Oriolidae
Panuridae
Paridae
Passeridae
Phylloscopidae
Prunellidae
Regulidae
Remizidae
Saxicolinae
Sittidae
Sturnidae
Sylviidae
Tichodromidae
Troglodytidae
Turdidae
Pelecaniformes
Ardeidae
Pelecanidae
Threskiornithidae
Phoenicopteriformes
Phoenicopteridae
Piciformes
Picidae
Podicipediformes
Podicipedidae
Diomedeidae
Hydrobatidae
Oceanitidae
Procellariidae
Psittaciformes
Psittacidae
Psittaculidae
Strigiformes
Strigidae
Tytonidae
Suliformes
Phalacrocoracidae
Sulidae
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