首页> 美国卫生研究院文献>The Journal of Experimental Biology >Falcons pursue prey using visual motion cues: new perspectives from animal-borne cameras
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Falcons pursue prey using visual motion cues: new perspectives from animal-borne cameras

机译:猎鹰使用视觉运动线索追捕猎物:动物摄像机带来的新视角

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摘要

This study reports on experiments on falcons wearing miniature videocameras mounted on their backs or heads while pursuing flying prey. Videos of hunts by a gyrfalcon (Falco rusticolus), gyrfalcon (F. rusticolus)/Saker falcon (F. cherrug) hybrids and peregrine falcons (F. peregrinus) were analyzed to determine apparent prey positions on their visual fields during pursuits. These video data were then interpreted using computer simulations of pursuit steering laws observed in insects and mammals. A comparison of the empirical and modeling data indicates that falcons use cues due to the apparent motion of prey on the falcon's visual field to track and capture flying prey via a form of motion camouflage. The falcons also were found to maintain their prey's image at visual angles consistent with using their shallow fovea. These results should prove relevant for understanding the co-evolution of pursuit and evasion, as well as the development of computer models of predation and the integration of sensory and locomotion systems in biomimetic robots.
机译:这项研究报告了有关猎鹰在追捕猎物时戴着微型摄像机安装在其背部或头部的实验。分析了吉利达猎鹰(Falcorusticalus),吉利达猎鹰(F.rusticalolus)/ Saker猎鹰(F.cherrug)杂种和游eg猎鹰(F.peregrinus)狩猎的视频,以确定追逐过程中它们视域中明显的猎物位置。然后使用计算机模拟的昆虫和哺乳动物中观察到的追随转向定律解释这些视频数据。经验数据和模型数据的比较表明,由于猎鹰在视野范围内出现明显的猎物运动,猎鹰会使用提示来通过运动伪装的形式跟踪和捕获飞行中的猎物。猎鹰还被发现可以在与浅浅中央凹一致的视角下保持猎物的形象。这些结果应证明对理解追捕和逃避的共同进化,以及捕食计算机模型的开发以及仿生机器人中感官和运动系统的集成有关。

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