Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Apodiformes Peters, 1940 - swifts
         Family Apodidae Hartert, 1897 - swifts
           Subfamily Apodinae Hartert, 1897 - true swifts
             Genus Chaetura Stephens, 1826
               Chaetura vauxi (J.K. Townsend, 1839) - Vaux's swift
                 1 Chaetura vauxi vauxi (Townsend, 1839) - Vaux's swift
                 2 Chaetura vauxi tamaulipensis Sutton, 1941
                 3 Chaetura vauxi gaumeri Lawrence, 1882 - Yucatan swift
                 4 Chaetura vauxi richmondi Ridgway, 1910 - dusky-backed swift
                 5 Chaetura vauxi ochropygia Aldrich, 1937
                 6 Chaetura vauxi aphanes Wetmore & Phelps, 1956
                 7 Chaetura vauxi andrei Berlepsch & Hartert, 1902