LITHNER, Stefan; JÖNSSON, K Ingemar. Abundance of owls and Bramblings Fringilla montifringilla in relation to mast seeding in south-eastern Sweden. Ornis Svecica, Lund, Sweden, v. 12, n. 1–2, p. 35–45, 2002. DOI: 10.34080/os.v12.22834. Disponível em: https://journals.lub.lu.se/os/article/view/22834. Acesso em: 5 may. 2024.