Order Anseriformes Wagler, 1831 - waterfowl and screamers Suborder Anseres Linnaeus, 1758 - waterfowl Family Anatidae Vigors, 1825 - ducks, geese, swans Subfamily Cygninae Vigors - swans see Subfamily Anserinae Vigors, 1825 Genus Cygnus Bechstein, 1803 - mute swan