NELSON, Colleen Helgeson. The identification of Barrow’s Goldeneye Bucephala islandica and Common Goldeneye B. clangula americana ducklings. Wildfowl, [S. l.], p. 178–183, 1993. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154686. Acesso em: 17 dec. 2025.