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首页> 美国卫生研究院文献>Biology Letters >It is time to move: linking flight and foraging behaviour in a diving bird
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It is time to move: linking flight and foraging behaviour in a diving bird

机译：现在该行动了：将潜水鸟的飞行和觅食行为联系起来

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摘要

Although the adaptive value of flight may seem obvious, it is the most difficult behaviour of birds to monitor. Here, we describe a technique to quantify the frequency and the duration of flights over several months by implanting a data logger that records heart rate (fH), hydrostatic pressure (diving depth) and the body angle of a large sea duck species, the common eider (Somateria mollissima). According to the mean fH recorded during flight and the parameters recorded to identify the fH flight signature, we were able to identify all flights performed by 13 individuals during eight months. We cumulated local flight time (outside migrations) and found that activity occurs primarily during dawn and morning and that flying activities are strongly related to diving activities (Pearson's r=0.88, permutation test p<0.001). This relationship was interpreted as a consequence of living in a dynamic environment where sea currents move the ducks away from the food patches. We believe that the technique described here will open new avenues of investigation in the adaptive value of flight.
机译：尽管飞行的适应性价值似乎很明显，但这是鸟类最难监测的行为。在这里，我们介绍了一种通过植入数据记录器来量化几个月内飞行的频率和持续时间的技术，该数据记录器记录心率（fH），静水压力（潜水深度）和大型海鸭物种的体角，这是常见的绒毛（Somateria mollissima）。根据飞行过程中记录的平均fH和记录的用以识别fH飞行特征的参数，我们能够识别出八个月内13个人进行的所有飞行。我们对本地飞行时间（外部迁移）进行了累计，发现活动主要发生在黎明和早晨，并且飞行活动与潜水活动密切相关（Pearson r = 0.88，排列检验p <0.001）。这种关系被解释为生活在动态环境中的结果，在这种动态环境中，海流使鸭子远离食物。我们相信，这里描述的技术将为适应性飞行的价值开辟新的研究途径。

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