MEININGER, Peter L; SNOEK, Harold. Non-breeding Shelduck Tadorna tadorna in the southwest Netherlands: effects of habitat changes on distribution, numbers, moulting sites and food. Wildfowl, [S. l.], p. 139–151, 1964. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/155209. Acesso em: 18 dec. 2025.