Great Grey Owl, Strix nebulosa (Strigiformes, Strigidae), Breeding and Reproduction in Polisskiy Nature Reserve, Ukraine

Kuzmenko, Yu.



A Great Grey Owl population on the territory of Polisskiy Nature Reserve (Olevsk and Ovruch District, Zhytomyr Region, Ukraine) was investigated in 20062008, 20132016. The main breeding locations were mesotrophic mires, where the lack of Birds of Prey nests made owls to breed on artifi cial constructions. Reproductive indexes of mean clutch size were similar to such indexes achieved in 19851996, and indexes of mean number of fl edglings on active nest and breeding success decreased reliably.