ANDREASSON, Fredrik. Two Eurasian Blue Tits Cyanistes caeruleus roosting together in a nest-box on multiple winter nights. Ornis Svecica, Lund, Sweden, v. 34, p. 56–63, 2024. DOI: 10.34080/os.v34.24041. Disponível em: https://journals.lub.lu.se/os/article/view/24041. Acesso em: 23 jun. 2024.