Neornithes Gadow, 1893 - living birds
Count: [s] 23o;193f;2136g;9595s;8ss; ‡1f;26g;131s
   Neornithes Gadow, 1893 - living birds
  Count: [s] 23o;193f;2136g;9595s;8ss; ‡1f;26g;131s
     Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
    Count: [s] 23o;187f;2121g;9539s; ‡1f;26g;128s
       Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
      Count: [s] 23o;187f;2121g;9539s; ‡1f;26g;128s
         Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
        Count: [*] 21o;179f;1992g;9095s; ‡1f;23g;120s
           Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
          Count: [*] 21o;179f;1992g;9095s; ‡1f;23g;120s
             [Order] Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
            Count: [*†*] 17f;86g;360s;438ss; ‡2g;7s;3ss
               Family Alcidae Vigors, 1825 - auks
              Count: [*†*] 10g;23s;30ss; ‡1g;1s
                 Genus Cepphus Pallas, 1769
                Count: [*] 3s;8ss
                   Cepphus columba Pallas, 1811 - pigeon guillemot
                  Count: [*] 3ss
                     Cepphus columba snowi Stejneger, 1897 - Kurile guillemot
                    Count: -