STRUTHIONIFORMES
RHEIFORMES
APTERYGIFORMES
CASUARIIFORMES
TINAMIFORMES
ANSERIFORMES
GALLIFORMES
CAPRIMULGIFORMES
STEATORNITHIFORMES
NYCTIBIIFORMES
PODARGIFORMES
AEGOTHELIFORMES
APODIFORMES
MUSOPHAGIFORMES
OTIDIFORMES
CUCULIFORMES
MESITORNITHIFORMES
PTEROCLIFORMES
COLUMBIFORMES
GRUIFORMES
PODICIPEDIFORMES
PHOENICOPTERIFORMES
CHARADRIIFORMES
EURYPYGIFORMES
PHAETHONTIFORMES
GAVIIFORMES
SPHENISCIFORMES
PROCELLARIIFORMES
CICONIIFORMES
SULIFORMES
PELECANIFORMES
OPISTHOCOMIFORMES
ACCIPITRIFORMES
STRIGIFORMES
COLIIFORMES
LEPTOSOMIFORMES
TROGONIFORMES
BUCEROTIFORMES
CORACIIFORMES
PICIFORMES
CARIAMIFORMES
FALCONIFORMES
PSITTACIFORMES
PASSERIFORMES