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Diet of boreal owl (Aegolius funereus) in lowlands of north-eastern Poland

机译:波兰东北部低地的北方猫头鹰(Aegolius funereus)的饮食

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Although studies on many owl species diets are common, there are only scarce data on the diet of the boreal owl from the lowlands of Eastern Europe. We have therefore studied its diet in one of the most important Polish population areas, the Knyszy??ska Forest (north-eastern Poland). Pellets were gathered between February and June in 2006, 2012a??2016 from tree hollows and the ground underneath. Altogether 178 pellets and six sets of pellet fragments were collected from 19 different sites. Eight mammal and eight bird species were identified among the 213 prey items found in the gathered material. Small mammals dominated, both in prey number (88.3%) and biomass (85.1%). Bank vole proved to be the main prey (over 40% of prey numbers), while Microtus voles (27.3%), small passerine birds (11.7%) and shrews (7.5%) were important alternative prey. Diet range proved to be similar to other sites in Europe.
机译:尽管对许多猫头鹰物种饮食的研究很普遍,但关于东欧低地的北方猫头鹰饮食的数据很少。因此,我们在波兰最重要的人口区之一,Knyszy ?? ska森林(波兰东北部)研究了它的饮食。在2006年2月至6月,2012年至2016年期间,从树木的凹陷处和地下地面收集了药丸。从19个不同的地点收集了总共178个颗粒和六组颗粒碎片。在收集的材料中发现的213种猎物中,鉴定出8种哺乳动物和8种鸟类。小型哺乳动物占主导地位,猎物数量(88.3%)和生物量(85.1%)。事实证明,河岸田鼠是主要的猎物(占猎物数量的40%以上),而田鼠田鼠(27.3%),小型雀形目鸟(11.7%)和sh(7.5%)是重要的替代猎物。饮食范围被证明与欧洲其他地区相似。

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