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 Hemiprocnidae Oberholser, 1906 [monotypic] - treeswifts
           Genus Hemiprocne Nitzsch, 1829
             Hemiprocne longipennis (Rafinesque, 1802) - grey-rumped treeswift
               1 Hemiprocne longipennis harterti Stresemann, 1913
               2 Hemiprocne longipennis perlonga (Richmond, 1903)
               3 Hemiprocne longipennis longipennis (Rafinesque, 1802)
               4 Hemiprocne longipennis wallacii (Gould, 1859)