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] Gaviiformes Wetmore & Miller, 1926 [monotypic]
            Count: [*] 1f;1g;5s;2ss
               Family Gaviidae Allen, 1897 [monotypic] - divers
              Count: [*] 1g;5s;2ss
                 Genus Gavia Forster, 1788
                Count: [*] 5s;2ss
                   Gavia arctica (Linnaeus, 1758) - black-throated diver
                  Count: [*] 2ss
                     Gavia arctica viridigularis Dwight, 1918 - green-throated loon
                    Count: -