The Greater Scaup (Aythya marila) is a species of bird (Aves) in the family Anatidae (Ducks, Geese, and Waterfowl) and order Anseriformes (Ducks).
Aythya baeri
Aythya valisineria
Aythya ferina
Aythya nyroca
Aythya marila
Aythya australis
Aythya affinis
Aythya innotata
Aythya novaeseelandiae
Aythya americana
Aythya collaris
Aythya fuligula