Food composition of Long-eared Owl (Asio otus) from Poland and Ukraine during non-breeding season. - Stasiak K., Kitowski I., Wiśniowski R., Pitucha G., Krawczyk R., Cios S., Grzywaczewski G., Bashta A.-T. - Berkut. 21 (1-2). 2012. - P. 93-97.
The food of Long-eared Owls found in pellets collected from communal roosts in Poland and Ukraine was studied. Domination of voles Microtus sp. in the birds’ diet was revealed. On three Transcarpathian roost sites voles were 77,7% of prey number and 89,0% of prey biomass. Results in Poland were similar, with the contribution of 76,5% and 87,8%, respectively. For places in Poland the Shannon-Wiener H´ index values were 0,71 to 2,25 and it was higher than values from Ukraine: 0,29 to 1,88. [English].
Key words: ecology, feeding, pellet, prey, rodent.
Address: K. Stasiak, University of Life Sciences in Lublin, Dep. of Zoology, Animal Ecology and Wildlife Management; Akademicka 13, 20-950 Lublin, Poland; e-mail: kreeso@wp.pl.