THE COORDINATED AEROBATICS OF DUNLIN FLOCKS
THE COORDINATED AEROBATICS OF DUNLIN FLOCKS
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DOI：
10.1016/s0003-3472(80)80127-8
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发表时间：
1980-01-01
期刊：
影响因子：
2.5
通讯作者：
DAVIS, JM
中科院分区：
文献类型：
--
作者：
DAVIS, JM
dunlin（C. alpina）在快速空中机动中拍摄。两种类型的演习被确定为：课程改变运动，整个羊群改变课程，旋转运动，个别鸟类在其矢状轴旋转，而不一定改变方向。这两种策略都可以使鸟群的整体外观突然从亮到暗（反之亦然），因为鸟首先用它们明亮的腹部羽毛，然后用它们黑暗的背部羽毛朝向观察者。慢动作分析表明，所需的平均时间由大多数鸟在相机视图中，以改变方向在机动过程中为196毫秒（SD = 137毫秒）。自我产生的同步是这种高度协调的群体行为的一种可能机制。
Flocks of dunlin (C. alpina) were filmed during rapid aerial maneuvers. Two types of maneuvers were identified: course-change movements in which the entire flock altered course, and rotation movements in which individual birds rotated on their sagittal axes without necessarily changing direction. Either maneuver could make a flock''s overall appearance shift suddenly from light to dark (or vice versa) as the birds oriented first with their light ventral, then with their dark dorsal, plumage toward the observer. Slow-motion analysis revealed that the average time required by a majority of birds in camera view to change orientations during a maneuver was 196 ms (SD = 137 ms). Self-generated synchrony is a possible mechanism for this highly coordinated group behavior.