While only the latter study recovered monophyly of the Cypselomorphae (see below) within Metaves, the former was based on only a single locus and could not resolve their relationships according to standard criteria of statistical confidence.
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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
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.