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首页> 外文期刊>Slovak Raptor Journal >Monitoring of colonies and provisioning of rooks with nest material as a potential tool for stabilizing colonies and increasing nesting opportunities in the countryside. Project report
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Monitoring of colonies and provisioning of rooks with nest material as a potential tool for stabilizing colonies and increasing nesting opportunities in the countryside. Project report

机译：监视殖民地并向巢雀提供巢料，这是稳定殖民地和增加农村筑巢机会的潜在工具。项目报告

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The rook is a species inhabiting open agricultural landscape whose non-active nests are also used by other bird species for nesting. It is the decline in rook colonies that has been posited as one of the reasons for decrease in the red-footed falcon?(Falco vespertinus)?population in Slovakia since the 1970s. During the period from 2012 till 2016, four monitorings of rook colonies were carried out in south-western Slovakia (Diakovce, Nitrianska Osada, Sokolce and Tvrdo?ovce). In the colony at Tvrdo?ovce, supporting activity involving provisioning of rooks with nest material was under way from 2014 until 2016. While the colonies at Diakovce and Nitrianska Osada have been showing a slight decrease in the number of nesting rooks, despite larger interannual differences the colony at Sokolce has been showing an upward trend. The size of the colony at Tvrdo?ovce has been stable since the beginning of the supporting activity. This activity had a statistically significant positive effect on the width of rook nests. In 74 cases in the studied rook colonies we have recorded nesting by three other bird species – Eurasian kestrel?(Falco tinnunculus) 43.8%, western jackdaw (Corvus monedula) 39.7% and long-eared owl?(Asio otus)?16.4%. In 2015 two female redfooted falcons were observed in the colony at Tvrdo?ovce.
机译：该白嘴鸦是一种居住在开放农业景观中的物种，其非活动巢也被其他鸟类用于筑巢。自从1970年代以来，斯洛伐克的红脚f（Falco vespertinus）种群减少就是原因之一，它是菜鸟群体的减少。在2012年至2016年期间，对斯洛伐克西南部地区（迪亚科夫采，尼特里斯卡·奥萨达，索科切斯和特维尔多夫采）的四只车队殖民地进行了监测。在Tvrdo？ovce的殖民地中，从2014年到2016年一直在进行包括向鸡群提供巢状材料的支持活动。尽管年间差异较大，但Diakovce和Nitrianska Osada的殖民地的巢雀数量有所下降。 Sokolce的殖民地一直呈上升趋势。自支持活动开始以来，Tvrdo？ovce的殖民地规模一直稳定。该活动对白嘴鸦巢的宽度具有统计学上显着的积极影响。在研究的鸡群中，有74个案例记录了其他三种鸟类的筑巢情况：欧亚k（Falco tinnunculus）43.8％，西部寒鸦（Corvus monedula）39.7％和长耳猫头鹰（Asio otus）16.4％。 2015年，在Tvrdo？ovce的殖民地中观察到两只雌性红脚猎鹰。

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