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The Food of the Imperial Eagle (Aquila heliaca) in Slovakia

机译:斯洛伐克皇家鹰(天鹰座heliaca)的食物

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In this work we assess the data on the food of the Imperial Eagle (Aquila heliaca) in two separate nesting populations: one in Western Slovakia (21 pairs), the other in Eastern Slovakia (30 pairs). In Western Slovakia between 1978 and 2005 we recorded a total of 562 food items, consisting of 33 species of animal. The species predominantly featuring in the food were the brown hare Lepus europaeus (40.2%), common pheasant Phasianuscolchicus (17.3%), feral pigeon Columba livia domestica (11.7%) and the common hamster Cricetus cricetus (11.6%). In Eastern Slovakia between 1971 and 2005 we identified a total of 524 food items, made up of 30 animal species with slightly varying predominance of the same principal kinds of prey: L. europaeus (29.0%), C. cricetus (27.7%), P. colchicus (8.4%) and Columba sp. (8.2%). Imperial Eagles nesting in Slovakia are affected by the consequences of a marked reduction in population density of steppe-type rodents, especially ground squirrels (Spermophilus citellus) and hamsters (C. cricetus) and have become dependent for their food mainly on the prevalence of other small animals (L. europaeus, P. colchicus) and pigeons (C. livia domestica). Pairs nesting in neighbouring Hungary had similar prey, but a different order of predominance of the species (Haraszthy et al. 1996): C. cricetus (51.0%), L. europaeus (12.0%), P. colchicus (11.6%) and S. citellus (7.4%).
机译:在这项工作中,我们评估了两个单独的筑巢种群中帝国鹰(天鹰座)的食物数据:一个在斯洛伐克西部(21对),另一个在斯洛伐克东部(30对)。 1978年至2005年之间,在斯洛伐克西部,我们总共记录了562种食品,其中包括33种动物。食物中的主要特征是褐野兔欧洲野兔(40.2%),野鸡Ph属(Phasianuscolchicus)(17.3%),野鸽家蝇(Columba livia domestica)(11.7%)和仓鼠Cricetus cricetus(11.6%)。 1971年至2005年之间,在斯洛伐克东部,我们总共确定了524种食品,由30种动物组成,这些动物在相同主要猎物中的优势稍有不同:欧洲乳杆菌(29.0%),克氏梭菌(27.7%), P. colchicus(8.4%)和Columba sp。 (8.2%)。帝国鹰在斯洛伐克的筑巢受到草原类啮齿动物(尤其是地松鼠(Spermophilus citellus)和仓鼠(C. cricetus))种群密度显着降低的后果的影响,它们的食物主要依赖于其他动物的流行小型动物(欧罗巴罗非鱼,秋水仙属秋水仙)和鸽子(C. livia domestica)。在邻国匈牙利筑巢的成对对具有相似的猎物,但该物种的优势顺序不同(Haraszthy等人,1996):C。cricetus(51.0%),L。europaeus(12.0%),P。colchicus(11.6%)和柠檬葡萄球菌(7.4%)。

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