Walankiewicz, W., Czeszczewik, D. and Mitrus, C. (2007) “Natural nest sites of the Collared Flycatcher Ficedula albicollis in lime-hornbeam-oak stands of a primeval forest”, Ornis Fennica, 84(4), pp. 155–162. Available at: https://ornisfennica.journal.fi/article/view/133693 (Accessed: 23November2024).