Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Order Apodiformes Peters, 1940 - swifts
                   Family Apodidae Hartert, 1897 - swifts
                     Subfamily Apodinae Hartert, 1897 - true swifts
                       1 Genus Apus Scopoli, 1777 - house swift
                       2 Genus Aëronautes Hartert, 1892 see Genus Aeronautes E. Hartert, 1892
                       3 Genus Panyptila Cabanis, 1847
                       4 Genus Micropanyptila Sutton, 1928 see Genus Tachornis Gosse, 1847
                       5 Genus Tachornis Gosse, 1847
                       6 Genus Cypsiurus Lesson, 1843