SÖDERHOLM, Svante. Greylag Goose Anser anser as nest parasite of Canada Goose Branta canadensis. Ornis Svecica, Lund, Sweden, v. 15, n. 3, p. 173–174, 2005. DOI: 10.34080/os.v15.22738. Disponível em: https://journals.lub.lu.se/os/article/view/22738. Acesso em: 30 jun. 2024.