The swifts are a family, Apodidae, of highly aerial birds. They are superficially similar to swallows, but are actually not closely related to passerine species at all; swifts are in the separate order Apodiformes, which they share with hummingbirds. The treeswifts are closely related to the true swifts, but form a separate family, the Hemiprocnidae.
Tribe Cypseloidini
Genus Cypseloides (9-10 species)
Genus Streptoprocne (3-4 species)
White-collared Swift Streptoprocne zonaris
Tribe Collocaliini - swiftlets
Genus Collocalia (3-4 species)
Genus Aerodramus (about 25 species, sometimes included in Collocalia)
Genus Hydrochous - Giant Swiftlet
Genus Schoutedenapus - African swiftlets (2 species)
Tribe Chaeturini - needletails
Genus Mearnsia (2 species)
Genus Zoonavena (3 species)
Genus Telacanthura (2 species)
Genus Rhaphidura (2 species)
Genus Neafrapus (2 species)
Genus Hirundapus (4 species)
Genus Chaetura (12 species)
Tribe Apodini - typical swifts
Genus Aeronautes (3 species)
Genus Tachornis (3 living species)
Genus Panyptila (2 species)
Genus Cypsiurus (2 species)
Genus Tachymarptis (2 species)
Genus Apus (some 17 species)
Little Swift Apus affinis