NEOAVES | METAVES |--+--+--Phoenicopteriformes | | | \--Phoenicopteridae (Flamingos) | | \--Podicipediformes | | \--Podicipedidae (Grebes) | | | \--+--Phaethontiformes | | \--Phaethontidae (Tropicbirds) | | | \--+--Pterocliformes | | \--Pteroclidae (Sandgrouse) | \--+--Mesitornithiformes | | \--Mesitornithidae (Mesites) | \--Columbiformes | \--Columbidae (Doves, Pigeons) | \-+--Eurypygiformes | |--Rhynochetidae (Kagu) | \--Eurypygidae (Sunbittern) | \-CYPSELOMORPHAE |--+--Steatornithiformes | | \--Steatornithidae (Oilbird) | \--Nyctibiiformes | \--Nyctibiidae (Potoos) | \-+--Podargiformes | \--Podargidae (Frogmouths) | \-+--Caprimulgiformes | \--Caprimulgidae (Nighthawks, Nightjars) | \-Apodiformes \-+--Aegothelidae (Owlet-nightjars) \-+--+--Hemiprocnidae (Treeswifts) | \--Apodidae (Swifts) \--Trochilidae (Hummingbirds)