LARSEN, Jesper K. Wigeon Anas penelope numbers and bags during two hunting regulation schemes at Skallingen, Denmark. Wildfowl, [S. l.], v. 47, p. 126–133, 1996. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154641. Acesso em: 3 apr. 2026.