OTIDAE \-+--Otidimorphae | |--+--Musophagiformes | | | \--Musophagidae (Turacos) | | \--Otidiiformes | | \--Otididae (Bustards) | \--Cuculiformes | \--Cuculidae (Cuckoos) | \-+--STRISORES \-+--Caprimulgiformes | \--Caprimulgidae (Nighthawks, Nightjars) |--+--Steatornithiformes | | \--Steatornithidae (Oilbird) | \--Nyctibiiformes | \--Nyctibiidae (Potoos) | \-+--Podargiformes | \--Podargidae (Frogmouths) | \-Apodiformes \-+--Aegothelidae (Owlet-nightjars) \-+--+--Hemiprocnidae (Treeswifts) | \--Apodidae (Swifts) \--Trochilidae (Hummingbirds)