Birds Taxonomy

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