Taxonomy

Passeriformes
Caprimulgiformes
Columbiformes
Accipitriformes
Piciformes
Strigiformes
Psittaciformes
Galliformes
Anseriformes
Gruiformes
Cuculiformes
Coraciiformes
Charadriiformes
Procellariiformes
Pelecaniformes
Falconiformes
Bucerotiformes
Tinamiformes
Trogoniformes
Suliformes
Galbuliformes
Otidiformes
Musophagiformes
Podicipediformes
Ciconiiformes
Sphenisciformes
Pterocliformes
Cathartiformes
Phoenicopteriformes
Coliiformes
Apterygiformes
Gaviiformes
Casuariiformes
Mesitornithiformes
Phaethontiformes
Struthioniformes
Rheiformes
Cariamiformes
Opisthocomiformes
Eurypygiformes
Leptosomiformes