Hildén, O. (1982) “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(2–3), pp. 149–151. Available at: https://ornisfennica.journal.fi/article/view/133104 (Accessed: 23November2024).