Kasprzyk KA, Frątczak W. Diet of solitary males Boreal Owls Aegolius funereus in the lowlands of the Bydgoszcz Forest (northern Poland). EQ [Internet]. 2025 Jul. 30 [cited 2025 Nov. 8];36(2):1-15. Available from: https://apcz.umk.pl/EQ/article/view/56163