Hildén, O. “Proportion of Juveniles As a Measure of Adult Mortality in a Breeding Population of Great Tits Parus Major and Blue Tits P. Caeruleus”. Ornis Fennica 59, no. 2–3 (September 30, 1982): 149–151. Accessed November 23, 2024. https://ornisfennica.journal.fi/article/view/133104.