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Free Content Seasonal variability in the diet of the long-eared owl Asio otus in a mosaic of field and forest habitats in central Poland

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The diet composition of long-eared owls in central Poland was studied in the years 2004-2010 using standard procedures entailing the analysis of pellets. A total of 2111 prey items were identified in the material analysed, and voles (Microtus spp.) were found to dominate in both the summer (April-September) and winter (October-March) seasons. Nevertheless, the owls consumed voles and all rodents significantly more often in winter, while taking birds and insects significantly more often in spring and summer. The food-niche breadth was thus greater in the summer period. Overall, the results confirm the dietary specialisation of long-eared owls toward predation on rodents of the genus Microtus.

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Document Type: Research Article

Publication date: December 1, 2015

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  • Acta zoologica cracoviensia is an international journal for rapid publication. The journal includes original contributions on systematics, phylogeny, biogeography, ecology and paleontology of terrestrial and fresh-water animals worldwide. Descriptions of new taxa are welcome, including single species. All papers are subject to peer reviews In the years between 2005 and 2011 the journal was published in two separate series: Acta Zoologica Cracoviensia – Series A: Vertebrata and Acta Zoologica Cracoviensia - Series B: Invertebrata

    Click here to see previous volumes 49 –54 regarding Vertebrata – former:Acta Zoologica Cracoviensia - Series A: Vertebrata
    Click here to see previous volumes 49 –54 regarding Invertebrata –former:Acta Zoologica Cracoviensia - Series B: Invertebrata

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