KÄLLANDER, H. The Nuthatch Sitta europaea population of Dalby Söderskog during 15 years: trend and fluctuations. Ornis Svecica, Lund, Sweden, v. 7, n. 3–4, p. 143–148, 1997. DOI: 10.34080/os.v7.22967. Disponível em: https://journals.lub.lu.se/os/article/view/22967. Acesso em: 2 oct. 2022.