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] Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
         Family Laridae Vigors, 1825 - gulls, terns and skimmers
           Subfamily Sterninae Bonaparte, 1838 - terns
             Genus Sterna Linnaeus, 1758
               Sterna hirundo Linnaeus, 1758 - common tern
                 1 Sterna hirundo hirundo Linnaeus, 1758
                 2 Sterna hirundo tibetana Saunders, 1876
                 3 Sterna hirundo minussensis Sushkin, 1925
                 4 Sterna hirundo longipennis Nordmann, 1835