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 cinereiventris P.L. Sclater, 1862 - grey-rumped swift
                 1 Chaetura cinereiventris phaeopygos Hellmayr, 1906
                 2 Chaetura cinereiventris lawrencei Ridgway, 1893
                 3 Chaetura cinereiventris schistacea Todd, 1937
                 4 Chaetura cinereiventris guianensis Hartert, 1892
                 5 Chaetura cinereiventris occidentalis Berlepsch & Taczanowski, 1884
                 6 Chaetura cinereiventris sclateri Pelzeln, 1868 - ash-rumped swift
                 7 Chaetura cinereiventris cinereiventris Sclater, 1862 - grey-rumped swift