PISTRORIUS, Pierre A; FOLLESTAD, Arne; TAYLOR, Frances E. Temporal changes in spring migration phenology in the Norwegian Greylag Goose Anser anser, 1971-2004. Wildfowl, [S. l.], p. 23–36, 2013. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153973. Acesso em: 17 dec. 2025.