Migratory restlessness increases and refuelling rate decreases over the spring migration season in northern wheatears
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- 作者：Cas Eikenaar ; cas.eikenaar@ifv-vogelwarte.de" class="auth_mail" title="E-mail the corresponding author ; Anna Fritzsch ; Steffen Kä ; mpfer ; Heiko Schmaljohann
- 关键词：date ; migration ; refuelling ; spring ; stopover ; strategy
- 刊名：Animal Behaviour
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：112
- 期：Complete
- 页码：75-81
- 全文大小：409 K
文摘
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We caged migrants at stopover to measure migratory restlessness and refuelling rate.
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We found that migratory restlessness increased over the spring season.
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Late birds, however, did not increase their rate of fuel deposition.
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Hence late birds speed up migration by shortening stopovers.
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Our study shows that stopover departure decisions are partly endogenously regulated.