The Aegothelidae (owlet-nightjars) with about a dozen living species in one genus are apparently closer to the Apodiformes; these and the Caprimulgiformes are closely related, being grouped together as Cypselomorphae
This, the caprimulgiform lineage(s), and the Apodiformes, are postulated to form a clade called Cypselomorphae, with the owlet-nightjars and the Apodiformes forming the clade Daedalornithes.
The existing avifauna can be grouped into podicipediformes, pelecaniformes, phoenicopteriformes, falconiformes, anseriformes, galliformes, gruiformes, charadriiformes, columbiformes, cuculiformes, strigiformes, caprimulgiformes, apodiformes, coraciiformes, piciformes, passeriformes. 39 species are included in the Red Book of Armenia.