Lindén, H., Nygård, T. and Wikman, M. (1984) “On the eggshell thickness and reproduction of the Peregrine Falcon Falco peregrinus in Finland”, Ornis Fennica, 61(4), pp. 116–120. Available at: https://ornisfennica.journal.fi/article/view/133159 (Accessed: 18September2024).