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 Apus Scopoli, 1777 - house swift
               Apus pallidus (Shelley, 1870) - pallid swift
                 1 Apus pallidus brehmorum Hartert, 1901
                 2 Apus pallidus illyricus Tschusi, 1907
                 3 Apus pallidus pallidus (Shelley, 1870)