"Bucephala" . . . . . "Barrow's Goldeneye" . "Bucephala islandica" . "Animalia" . . . "Chordata" . "Anseriformes" . . . . . . . . . . "(Gmelin 1789)" . "Anatidae" . "Aves" . "Bucephala islandica (Gmelin 1789)" . . . .