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
Somateria mollissima (Linnaeus, 1758) - common eider
Somateria mollissima v-nigra Gray, 1856
see Somateria mollissima v-nigrum Bonaparte & G.R. Gray, 1855