GUSTIN, Marco; PIZZARI, Tommaso. Migratory pattern in the genus Circus: sex and age differential migration in Italy. Ornis Svecica, Lund, Sweden, v. 8, n. 1–2, p. 23–26, 1998. DOI: 10.34080/os.v8.22957. Disponível em: https://journals.lub.lu.se/os/article/view/22957. Acesso em: 27 apr. 2024.