梅花鹿的脚力:在寒冷气候中栖息的猛禽

IF 0.9 4区 心理学 Q4 PSYCHOLOGY, EXPERIMENTAL
Ian G Warkentin
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引用次数: 0

摘要

摘要单足栖息或站立在鸟类中很常见,但在大多数物种中,尤其是在猛禽中,单足栖息或站立的一致性较低。对于气温较低的鸟类来说,单足栖息可限制热量通过无羽毛的腿和脚散失;随着气温降低,鸟类单足栖息的时间会延长。通过无线电跟踪,我在加拿大萨斯卡通对九只越冬、自由生活的梅林(Falco columbarius)进行了486小时的观察。其中五只梅林明显偏好单脚栖息,但偏好方向并不一致,四只梅林为双脚栖息。单足栖息的时间比例与温度呈曲线关系,在温度适中(-10至-19°C)时,单足栖息的时间比例达到顶峰,为22%,但在温度较高和较低时,单足栖息的时间比例较低;温度平方项的主效应影响很大,而单足栖息的偏好对单足栖息的使用没有影响。虽然一些个体表现出优先使用单足栖息,但在较低温度下,体温调节可能不是这种行为的主要驱动因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Footedness in merlins: Raptors perching in a cold climate.

ABSTRACTPerching or standing on one foot is commonly reported in birds but the level of consistency in using one foot over the other has been less-well documented in most species, particularly birds of prey. For birds experiencing colder temperatures, unipedal perching has been attributed to limiting heat loss through unfeathered legs and feet; individuals should spend longer periods of time perched on one foot as temperatures decrease. Using radio tracking, I collected 486 hours of observations on nine overwintering, free-living merlins (Falco columbarius) in Saskatoon, Canada. Five merlins displayed clear preferences to perch on one foot, however the direction of preference was not consistent and four birds were ambidextrous. There was a curvilinear response in the proportion of time spent in unipedal posture versus temperature, with a peak of ∼22% of the time at moderate temperatures (-10 to -19°C), but lower values at warmer and colder temperatures; the main effect of the squared term for temperature was highly influential while individual foot preference had no impact on the use of unipedal perching. Although preferential use of one foot for perching was displayed by some individuals, thermoregulation may not be the primary driver of this behaviour at colder temperatures.

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来源期刊
Laterality
Laterality Multiple-
CiteScore
3.60
自引率
7.10%
发文量
26
期刊介绍: Laterality: Asymmetries of Body, Brain and Cognition publishes high quality research on all aspects of lateralisation in humans and non-human species. Laterality"s principal interest is in the psychological, behavioural and neurological correlates of lateralisation. The editors will also consider accessible papers from any discipline which can illuminate the general problems of the evolution of biological and neural asymmetry, papers on the cultural, linguistic, artistic and social consequences of lateral asymmetry, and papers on its historical origins and development. The interests of workers in laterality are typically broad.
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