MAYHEW, Peter W; HOUSTON, David C. Food throughput time in European Wigeon Anas penelope and other grazing waterfowl. Wildfowl, [S. l.], p. 174–177, 1993. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154682. Acesso em: 17 dec. 2025.