North American Classification Committee (NACC)
Species Count: 1877
Accipitridae
Aegithalidae
Alaudidae
Alcedinidae
Alcidae
Anatidae
Anhingidae
Apodidae
Aramidae
Ardeidae
Bombycillidae
Bucconidae
Burhinidae
Calcariidae
Caprimulgidae
Cardinalidae
Certhiidae
Charadriidae
Ciconiidae
Cinclidae
Coerebidae
Columbidae
Corvidae
Cotingidae
Cracidae
Cuculidae
Diomedeidae
Dulidae
Emberizidae
Estrildidae
Eurypygidae
Falconidae
Formicariidae
Fregatidae
Fringillidae
Furnariidae
Galbulidae
Gaviidae
Glareolidae
Grallariidae
Gruidae
Heliornithidae
Hirundinidae
Hydrobatidae
Icteridae
Jacanidae
Laniidae
Laridae
Meliphagidae
Mimidae
Momotidae
Monarchidae
Motacillidae
Muscicapidae
Numididae
Nyctibiidae
Odontophoridae
Paridae
Parulidae
Passerellidae
Passeridae
Pelecanidae
Peucedramidae
Phaethontidae
Phalacrocoracidae
Phasianidae
Phoenicopteridae
Picidae
Pipridae
Ploceidae
Podicipedidae
Polioptilidae
Procellariidae
Prunellidae
Psittacidae
Pteroclididae
Ptilogonatidae
Pycnonotidae
Rallidae
Ramphastidae
Regulidae
Remizidae
Rhinocryptidae
Sapayoaidae
Scolopacidae
Sittidae
Steatornithidae
Stercorariidae
Strigidae
Sturnidae
Sulidae
Sylviidae
Thamnophilidae
Thraupidae
Threskiornithidae
Tinamidae
Todidae
Trochilidae
Troglodytidae
Trogonidae
Turdidae
Tyrannidae
Tytonidae
Upupidae
Viduidae
Vireonidae
Zosteropidae