来吧宝贝，让我们一起跳扭扭舞：红尾伯劳杀戮的运动学。
Come on baby, let's do the twist: the kinematics of killing in loggerhead shrikes.
机构信息
Department of Ecology and Evolutionary Biology, University of Connecticut, 75 N. Eagleville Road, Unit 3043, Storrs, CT 06269-3043, USA
Department of Ecology and Evolutionary Biology, University of Connecticut, 75 N. Eagleville Road, Unit 3043, Storrs, CT 06269-3043, USA.
出版信息
Biol Lett. 2018 Sep;14(9). doi: 10.1098/rsbl.2018.0321.
Shrikes use their beaks for procuring, dispatching and processing their arthropod and vertebrate prey. However, it is not clear how the raptor-like bill of this predatory songbird functions to kill vertebrate prey that may weigh more than the shrike itself. In this paper, using high-speed videography, we observed that upon seizing prey with their beaks, shrikes performed rapid (6-17 Hz; 49-71 rad s) axial head-rolling movements. These movements accelerated the bodies of their prey about their own necks at -forces of approximately 6 , and may be sufficient to cause pathological damage to the cervical vertebrae and spinal cord. Thus, when tackling relatively large vertebrates, shrikes appear to use inertia of their prey's own body against them.
伯劳鸟用它们的喙来获取、处理它们的节肢动物和脊椎动物猎物。然而，目前尚不清楚这种类似猛禽的捕食性鸣禽的喙是如何用来杀死可能比伯劳鸟本身还重的脊椎动物猎物的。在本文中，我们使用高速录像技术观察到，伯劳鸟用喙抓住猎物后，会快速（6-17 Hz；49-71 rad s）进行轴向头部滚动运动。这些运动会使猎物的身体绕着自己的脖子以大约-6 的力加速运动，这可能足以对颈椎和脊髓造成病理性损伤。因此，当处理相对较大的脊椎动物时，伯劳鸟似乎会利用猎物自身身体的惯性来对抗它们。
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