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雷达卡
摘要翻译：
研究了楚卡鹧鸪幼体从孵化到孵化后14天的空中翻正机理。机翼的不对称运动在1到8 dph之间使用，通过身体滚动来实现渐进式的更成功的扶正行为。在8 dph之后，机翼运动过渡到两侧对称的扑动，通过机头向下俯仰产生空中扶正，下降期间垂直力产生大幅增加。在个体遗传学上，使用这种机翼运动来实现空中扶正先于对称扑动和先前记录的chukar行为（即机翼辅助倾斜运行），该行为被假设与鸟类早期飞行进化有关。这些发现突出了在鸟类发育过程中机翼非对称激活和受控空中机动的重要性，并对理解鸟类飞行的起源具有潜在的相关意义。
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英文标题：
《Ontogeny of aerial righting and wing flapping in juvenile birds》
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作者：
Dennis Evangelista, Sharlene Cam, Tony Huynh, Igor Krivitskiy, and
Robert Dudley
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最新提交年份：
2014
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分类信息：
一级分类：Physics 物理学
二级分类：Biological Physics 生物物理学
分类描述：Molecular biophysics, cellular biophysics, neurological biophysics, membrane biophysics, single-molecule biophysics, ecological biophysics, quantum phenomena in biological systems (quantum biophysics), theoretical biophysics, molecular dynamics/modeling and simulation, game theory, biomechanics, bioinformatics, microorganisms, virology, evolution, biophysical methods.
分子生物物理、细胞生物物理、神经生物物理、膜生物物理、单分子生物物理、生态生物物理、生物系统中的量子现象（量子生物物理）、理论生物物理、分子动力学/建模与模拟、博弈论、生物力学、生物信息学、微生物、病毒学、进化论、生物物理方法。
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一级分类：Quantitative Biology 数量生物学
二级分类：Other Quantitative Biology 其他定量生物学
分类描述：Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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英文摘要：
Mechanisms of aerial righting in juvenile Chukar Partridge (Alectoris chukar) were studied from hatching through 14 days post hatching (dph). Asymmetric movements of the wings were used from 1 to 8 dph to effect progressively more successful righting behaviour via body roll. Following 8 dph, wing motions transitioned to bilaterally symmetric flapping that yielded aerial righting via nose down pitch, along with substantial increases in vertical force production during descent. Ontogenetically, the use of such wing motions to effect aerial righting precedes both symmetric flapping and a previously documented behaviour in chukar (i.e., wing assisted incline running) hypothesized to be relevant to incipient flight evolution in birds. These findings highlight the importance of asymmetric wing activation and controlled aerial manoeuvres during bird development, and are potentially relevant to understanding the origins of avian flight.
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PDF链接：
https://arxiv.org/pdf/1408.1385
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