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Different alternative diets within two subgroups in a winter roost of long-eared owls

机译：两种亚组内的不同替代饮食中的冬季牛猫头鹰

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In winter 2013/2014 a roost of long-eared owls in Bojnice Spa (central Slovakia) was formed by two subgroups situated 12 meters apart from each other. The diets of both subgroups and the direction of the owlsa?? departure from the roost were studied at monthly intervals. Owls of the Pinus-subgroup left the roost in a significantly different direction compared with the owls in the Picea-subgroup. The common vole was the most hunted prey in both subgroups. However, comparing the alternative prey of the two subgroups, the wood mouse and other mammals were found significantly more often in pellets of the Picea-sub-group, whereas birds were more frequent in pellets of the Pinus-subgroup. Our results suggest that the different prey hunted by the two subgroups may be a consequence of diverging hunting areas with different availability of alternative prey species.
机译：2013/2014 2013/2014 Bojnice Spa（中央斯洛伐克）的长耳猫头鹰（中央斯洛伐克）的栖息地由彼此相隔12米的两个亚组形成。亚组的饮食和猫头鹰的方向？从月度间隔进行了从栖息的出发。与Picea-subgroup中的猫头鹰相比，松弛子组的猫头鹰留下了明显不同的方向。普通的牧群是两个亚组中最多的猎物。然而，比较两种亚组的替代猎物，在Picea-sub组的颗粒中常剧发现木鼠和其他哺乳动物，而鸟类在粒子的颗粒中更频繁地频繁。我们的研究结果表明，两个亚组的不同猎物可能是不同替代猎物物种的不同可用性的狩猎区域的后果。

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