Källander, Hans. “The Nuthatch Sitta Europaea Population of Dalby Söderskog During 15 Years: Trend and Fluctuations”. Ornis Svecica 7, no. 3–4 (October 1, 1997): 143–148. Accessed April 7, 2025. https://journals.lub.lu.se/os/article/view/22967.