Departure of migrating European robins, Erithacus rubecula, from a stopover site in relation to wind and rain
Departure of migrating European robins, Erithacus rubecula, from a stopover site in relation to wind and rain
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DOI：
10.1016/j.anbehav.2003.03.011
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发表时间：
2004-02-01
期刊：
影响因子：
2.5
通讯作者：
Jenni, L
中科院分区：
文献类型：
--
作者：
Schaub, M;Liechti, F;Jenni, L
候鸟在补充燃料储备时，必须决定何时离开中途停留地进行下一次飞行。我们研究了是否决定离开中途停留地点取决于风和雨的条件。从捕获-再捕获数据收集的1153欧洲知更鸟在三个秋天在瑞士的中途停留点，我们估计每天的移民概率与一个新开发的多状态捕获-再捕获模型，占瞬变的发生。我们测试了每日移民概率的变化是否可以用风速、风向（地面和地面以上300米）或降雨来解释。移民概率的变化在很大程度上解释了在300米的风和雨的变化。在无风或弱风（1.5 m/s）的夜晚，迁移概率最高（0.5），在弱风的夜晚（
Migratory birds replenishing their fuel stores have to decide when to leave their stopover site for the next flight bout. We studied whether the decision to leave a stopover site depends on wind and rain conditions. From capture-recapture data of 1153 European robins collected during three autumns at a stopover site in Switzerland, we estimated the daily emigration probability with a newly developed multistate capture-recapture model that accounts for the occurrence of transients. We tested whether the variation in the daily emigration probabilities can be explained by wind speed, wind direction (both on the ground and 300 m above ground) or rain. Variation in emigration probability was largely explained by variation in wind at 300 m and rain. The emigration probability was highest (0.5) during nights with no or weak (1.5 m/s), and on nights with weak winds (