Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Aves
Subclass: Neornithes (2,057 genera / 9,672 species)
Infraclass: Eoaves
Parvclass: Passerae
Phylum: Chordata
Subphylum: Vertebrata
Class: Aves
Subclass: Neornithes (2,057 genera / 9,672 species)
Infraclass: Eoaves
Parvclass: Passerae
Superorder: Strigimorphae
Order: Strigiformes (45/291 barn and grass owls, typical owls, owlet-nightjars, frogmouths, oilbird, potoos, eared-nightjars, nighthawks, nightjars)
- Suborder: Strigi
- Parvorder: Tytonida
- Family: Tytonidae (2/17 barn owls, grass owls)
Parvorder: Strigida
- Family: Strigidae (23/161 typical owls)
Suborder: Aegotheli
- Family: Aegothelidae (1/8 owlet-nightjars)
Suborder: Caprimulgi
- Infraorder: Podargides
- Family: Podargidae (1/3 Australian frogmouths)
Family: Batrachostomidae (1/11 Asian frogmouths)
Infraorder: Caprimulgides
- Parvorder: Steatornithida
- Superfamily: Steatornithoidea
- Family: Steatornithidae (1/1 oilbird)
Superfamily: Nyctibioidea
- Family: Nyctibiidae (1/7 potoos)
Parvorder: Caprimulgida
- Superfamily: Eurostopodoidea
- Family: Eurostopodidae (1/7 eared-nightjars)
Superfamily: Caprimulgoidea
- Family: Caprimulgidae (14/76)
- Subfamily: Chordeilinae (nighthawks)
Subfamily: Caprimulginae (nightjars)