Antczak, M., M. Hromada, and T. Tryjanowski. “Research Activity Induces Change in Nest Position of the Great Grey Shrike Lanius Excubitor”. Ornis Fennica 82, no. 1 (March 31, 2005): 20–25. Accessed November 24, 2024. https://ornisfennica.journal.fi/article/view/133628.