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COLONY ABANDONMENT IN RESPONSE TO BALD EAGLE HALIAEETUS LEUCOCEPHALUS NEST PREDATION

机译:殖民地遗弃以应对秃头鹰卤素嗜血素巢捕食

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On 09 June 2016 we witnessed an attack by an adult Bald Eagle Haliaeetus leucocephalus on one of the largest Aleutian Tern Onychoprion aleuticus colonies in the Kodiak Archipelago, Alaska; it resulted in complete colony abandonment. The Bald Eagle wasaccompanied by Black-billed Magpies Pica hudsonia, which scavenged nests destroyed by the eagle and appeared to depredate several nests. Based on nesting chronology determined from earlier surveys and on searches for nest contents remaining after the attack, we concluded that eggs were the primary target. We believe this is the first report of Bald Eagle predation on tern eggs leading to complete colony abandonment. Colony abandonment by Aleutian Terns mid-season has been reported previously, but causes of abandonment have not been identified.
机译:2016年6月09日,我们目睹了一只成年秃头哈里涅省的攻击,位于阿拉斯加的Kodiagek群岛的最大阿列特燕牛肉阿列特·塞尔尼亚 它导致完全殖民地遗弃。 秃头鹰由黑账单喜鹊·哈德森·哈德森·哈德逊群岛(Bald Beagle)幸运,被鹰被鹰摧毁的巢穴,似乎剥夺了几个巢穴。 根据从早期调查确定的嵌套年表以及攻击后剩下的巢内容的搜索,我们得出结论,鸡蛋是主要目标。 我们相信这是泰国鸡蛋秃头焚烧导致完全殖民地遗弃的第一份报告。 在季节中期的季节遗弃群体遗弃了,但尚未确定遗弃原因。

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