RYTTMAN, H. Aggressive Great Tits Parus major: starved birds or belonging to a different population?. Ornis Svecica, Lund, Sweden, v. 27, n. 2–4, p. 94–96, 2017. DOI: 10.34080/os.v27.19560. Disponível em: https://journals.lub.lu.se/os/article/view/19560. Acesso em: 1 oct. 2022.