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首页> 外文期刊>Behavioral Ecology and Sociobiology >The good and the bad stopover: behaviours of migrant reed warblers at two contrasting sites
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The good and the bad stopover: behaviours of migrant reed warblers at two contrasting sites

机译：中途停留的好与坏：迁徙的芦苇莺在两个相反的地点的行为

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摘要

Successful migration for passerine birds depends largely on the quality of stopover habitats, but we still lack complete knowledge of how migrants search for habitats en route and how they behave when landing at poor quality stopover sites. We compared the distance of exploratory movements and stopover durations of the reed warbler Acrocephalus scirpaceus, a reedbed habitat specialist, released at suitable (reed bed) and unsuitable (sand dune) stopover sites. Birds tape-lured during nocturnal migration to a sand dune were captured, radio-tagged, released and tracked at two sites of contrasting habitat quality. Lean birds were found to move further in the dunes (max. 300 m) than in reeds (max. 200 m), whereas ‘fat’ individuals at both sites remained stationary. Birds spent just 1 day in the dunes and up to 13 days in the reeds. Our results suggest that some nocturnal migrants with restricted diurnal exploratory movements depend on stopover site selection when ceasing nocturnal flight.
机译：雀形目鸟类的成功迁徙很大程度上取决于中途停留栖息地的质量，但是我们仍然缺乏关于迁徙者如何在途中寻找栖息地以及它们在质量差的中途停留地点时如何表现的完整知识。我们比较了芦苇莺栖息地专家芦苇莺Acrocephalus scirpaceus的探索性运动距离和中途停留时间，它们在合适的（芦苇床）和不合适的（沙丘）停留地点释放。在夜间迁移到沙丘的过程中，用胶带粘住的鸟类在栖息地质量形成对比的两个地点被捕获，放射性标记，释放和追踪。沙丘中的瘦鸟（最大300 m）比芦苇中的鸟（最大200 m）运动得更远，而两个地方的“胖子”个体保持静止。鸟类在沙丘上只呆了1天，在芦苇上只呆了13天。我们的结果表明，一些夜间探查活动受限的夜间移民在停止夜间飞行时取决于中途停留地点的选择。

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