STELLAR-ORIENTATION SYSTEM OF A MIGRATORY BIRD
STELLAR-ORIENTATION SYSTEM OF A MIGRATORY BIRD
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DOI：
10.1038/scientificamerican0875-102
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发表时间：
1975-01-01
影响因子：
3
通讯作者：
EMLEN, ST
中科院分区：
文献类型：
--
作者：
EMLEN, ST
黑鸟莺是一种小型的、不显眼的鸣禽，夏季在阿拉斯加和加拿大北方发育不良的针叶林中繁殖。当秋天来临时，这些鸟开始了一段非凡的迁徙之旅。它们离开北方的森林，向东南偏东方向飞行，穿过北美大陆，到达阿拉斯加。埃姆兰海岸。在这一阶段的旅程中，它们停下来进食，并积累皮下脂肪，作为下一阶段的重要能量储备。黑鸟聚集在新英格兰海岸和加拿大的海洋省份附近，等待合适的天气条件。然后，随着下一个高压环流从西方移动，带来了来自北方或西北方向的风，黑鸟再次离开，这一次是在海洋上空的直飞航班上，这将需要他们三到五天。它们飞越百慕大群岛、安的列斯群岛和波多黎各，只有在南美洲东北海岸登陆时才停下来。这是一个巨大的壮举：
The blackpoll warbler is a small, inconspicuous songbird that breeds during the summer in the stunted conifer forests of Alaska and northern Canada. When fall approaches, these birds embark on a remarkable mi gratory journey. They leave the northern forests and fly east-southeast across the North American continent to the Atlanby Stephen T. Emlen tic coast. During this stage of the journey they stop to feed and build up stores of subcutaneous fat that will serve as a vital energy reserve for the next stage. The blackpolls concentrate near the coast of New England and the Maritime Prov inces of Canada, waiting for the right weather conditions. Then, as the next high-pressure cell moves in from the west, bringing with it winds from the north or northwest, the blackpolls depart again, this time over the ocean on a non stop flight that will take them three to five days. They fly over Bermuda, the Antilles and Puerto Rico, stopping only when they make landfall on the north eastern coast of South America. It is a tremendous feat: a nonstop flight of