Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
     Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
       Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
         Superorder Apodimorphae see Order Apodiformes Peters, 1940
           Order Apodiformes Peters, 1940 - swifts
             Family Apodidae Hartert, 1897 - swifts
               01 Genus Cypseloides Streubel, 1848
               02 Genus Streptoprocne Oberholser, 1906
               03 Genus Hydrochrous nom. null. see Genus Hydrochous Brooke, 1970
               04 Genus Collocalia G.R. Gray, 1840
               05 Genus Schoutedenapus de Roo, 1968
               06 Genus Mearnsia Ridgway, 1911
               07 Genus Zoonavena Mathews, 1918
               08 Genus Telacanthura Mathews, 1918
               09 Genus Rhaphidura Oates, 1883
               10 Genus Neafrapus Mathews, 1918
               11 Genus Hirundapus Hodgson, 1837
               12 Genus Chaetura Stephens, 1826
               13 Genus Aeronautes E. Hartert, 1892
               14 Genus Tachornis Gosse, 1847
               15 Genus Panyptila Cabanis, 1847
               16 Genus Cypsiurus Lesson, 1843
               17 Genus Tachymarptis Roberts, 1922
               18 Genus Apus Scopoli, 1777 - house swift