DUNCAN, Keith; MARQUISS, Mick. The sex-age ratio, diving behaviour and habitat use of Goldeneye Bucephala clangula wintering in northeast Scotland. Wildfowl, [S. l.], p. 111–120, 1993. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154691. Acesso em: 16 dec. 2025.