RYTTMAN, Hans. The survival of the Red-backed Shrike Lanius collurio in Sweden. Ornis Svecica, Lund, Sweden, v. 6, n. 3, p. 122–123, 1996. DOI: 10.34080/os.v6.22988. Disponível em: https://journals.lub.lu.se/os/article/view/22988. Acesso em: 24 may. 2024.