Abstract
An analysis of the pellets of Tyto alba in three sites in NE Poland revealed 1,091 individuals of small mammals. Fifteen species were found, including three Soricomorpha, two Chiroptera and ten Rodentia. Arvicola amphibius and Microtus agrestis were found in the valleys of the Biebrza and Narew Rivers, and Sorex araneus and Microtus oeconomus were relatively frequent there. In Jedwabne a remarkable share of S. araneus, Mus musculus and Microtus arvalis was noted.
Published Version
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