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首页> 外文期刊>The Wilson Bulletin >Hatching Synchrony, Green Branch Collecting, and Prey Use by Nesting Harpy Eagles (Harpia harpyja)
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Hatching Synchrony, Green Branch Collecting, and Prey Use by Nesting Harpy Eagles (Harpia harpyja)

机译：孵化同步，绿色分支收集和嵌套Harpy Eagles（Harpia harpyja）的猎物使用

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摘要

We observed an occupied Harpy Eagle {Harpia harpyja) nest over three separate periods in eastern Venezuela. Both eggs in the clutch hatched on the same day, and two nestlings competed in the nest for 14 days before one succumbed. The female adult collected green branches 45 times over 60 days of observation. Green branch deliveries were positively associated with prey deliveries and our observations best support the 'nest sanitation by covering prey' hypothesis for the adaptive significance of green branch collecting. Prey delivery rate to the nest averaged one delivery every 2.4, 2.1, and 3.7 days in the three observation periods. Three-toed sloths (Bradypus tridactylus) and wedge-capped capuchins (Cebus olivaceus) were the most common prey items brought to the nest.
机译：我们在委内瑞拉东部的三个不同时期观察到一个被占领的Harpy Eagle（Harpia harpyja）巢。离合器中的两个卵在同一天孵化，两个雏鸟在巢中竞争了14天，然后一个被屈服。雌成虫在60天的观察中收集了45次绿枝。绿枝交付与猎物交付呈正相关，我们的观察结果最好地支持了“通过覆盖猎物”假设来实现“巢穴环境卫生”，因为绿枝收集具有适应性意义。在三个观察期内，猎物到巢的平均每2.4天，2.1天和3.7天交付一次。三趾树懒（Bradypus tridactylus）和楔形帽卷尾猴（Cebus olivaceus）是带入巢中最常见的猎物。

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