Order Anseriformes Wagler, 1831 - waterfowl and screamers Suborder Anseres Linnaeus, 1758 - waterfowl Family Anatidae Vigors, 1825 - ducks, geese, swans Subfamily Merginae Bonaparte - sea ducks see Subfamily Anatinae Vigors, 1825 Genus Bucephala Baird, 1858