BRIGGS, S V. Weight changes and reproduction in female Blue-billed and Musk Ducks, compared with North American Ruddy Ducks. Wildfowl, [S. l.], p. 98–101, 1988. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154726. Acesso em: 16 dec. 2025.