Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Galloanserae Sibley, Ahlquist & Monroe Jr., 1988 see Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
       [Order] Anseriformes Wagler, 1831 - waterfowl and screamers
         Family Anatidae Vigors, 1825 - ducks, geese, swans
           Subfamily Anatinae Vigors, 1825 - pond ducks
             Genus Somateria Leach, 1819
               1 Somateria fischeri (Brandt, 1847) - spectacled eider
               2 Somateria spectabilis (Linnaeus, 1758) - king eider
               3 Somateria mollissima (Linnaeus, 1758) - common eider