Heldbjerg H, Karlsson L. Autumn migration of Blue Tit Parus caeruleus at Falsterbo, Sweden 1980–94: population changes, migration patterns and recovery analysis. Ornis Svec [Internet]. 1997 Oct. 1 [cited 2024 Nov. 22];7(3–4):149-67. Available from: https://journals.lub.lu.se/os/article/view/22968