Małe ssaki w okolicy Janowca nad Wisłą (środkowo-wschodnia Polska) na podstawie składu pokarmu puszczyka Strix aluco i uszatki Asio otus

At two sites near Janowiec nad Wisłą (middle-eastern Poland) the species composition of a small mammal community in the diet of the tawny owl Strix aluco and long-eared owl Asio otus has been examined. The bones of 128 mammals have been extracted from S. aluco pellets gathered in the years 2014-2015, whereas 401 mammals have been extracted from A. otus pellets collected in the years 2023-2024. Dominant species in the diet of S. aluco (the site bordering woodland) were Clethrionomys glareolus (31.3%), Apodemus agrarius (16.4%) and Apodemus flavicollis (12.5%), while in the case of A. otus (the site bordering open landscape) Microtus arvalis (55.1%) appeared most frequent. Altogether 16 species were recorded representing: Soricomorpha (4), Chiroptera (1), Rodentia (10) and Carnivora (1). Two bats caught as prey belonged to the species of Myotis nattereri, common in this part of Poland. Most interesting species were Crocidura leucodon, whose recorded sites are near its range limit, and Muscardinus avellanarius – the species infrequently recorded in central and eastern Poland.

24 cm