JENSSON, H. An extremely large brood of Greylag Goose Anser anser: Adoption or egg dumping by several females?. Ornis Svecica, Lund, Sweden, v. 10, n. 3–4, p. 173–177, 2000. DOI: 10.34080/os.v10.22877. Disponível em: https://journals.lub.lu.se/os/article/view/22877. Acesso em: 23 may. 2022.