Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Apodiformes Peters, 1940 - swifts
           Family Apodidae Hartert, 1897 - swifts
             1 Subfamily Cypseloidinae Bonaparte, 1838
             2 Subfamily Apodinae Hartert, 1897 - true swifts