Bielanski, W. “Impact of Common Silvicultural Treatments on Nest Tree Accessibility for Common Buzzard Buteo Buteo and Goshawk Accipiter Gentilis”. Ornis Fennica 81, no. 4 (December 31, 2004): 180–185. Accessed September 14, 2024. https://ornisfennica.journal.fi/article/view/133625.