BOYD, H; FOX, A D. Abdominal profiles of Icelandic Pink-footed Geese Anser brachyrhynchus in spring. Wildfowl, [S. l.], p. 161–175, 1995. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154653. Acesso em: 17 dec. 2025.