Kjellén, Nils. “Importance of a Bird Migration Hot Spot: Proportion of the Swedish Population of Various Raptors Observed on Autumn Migration at Falsterbo 1986–1995 and Population Changes Reflected by the Migration Figures”. Ornis Svecica 7, no. 1 (January 1, 1997): 21–34. Accessed November 22, 2024. https://journals.lub.lu.se/os/article/view/22975.