NILSSON, L; KAMP-PERSSON, H. Why should Greylag Goose Anser anser parents rear offspring of others?. Wildfowl, [S. l.], p. 25–37, 2013. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153914. Acesso em: 17 dec. 2025.