Jankowiak, L.; Antczak, M.; Kwieciñski, Z.; Szymañski, P.; Tobolka, M.; Tryjanowski, P. Diurnal Raptor Community Wintering in an Extensively Used Farmland. Ornis Fenn 2015, 92 (2), 76–86. https://doi.org/10.51812/of.133870.