KÄLLANDER, H. A dominant Coal Tit Parus ater. Ornis Svecica, Lund, Sweden, v. 7, n. 1, p. 37, 1997. DOI: 10.34080/os.v7.22977. Disponível em: https://journals.lub.lu.se/os/article/view/22977. Acesso em: 2 oct. 2022.