如果你想让约会给人留下深刻的印象，带她跳支快步舞吧，但千万别跳交际舞。至少对于侏儒鸟来说，这是一个绝佳的建议。
侏儒鸟
研究人员在英国《皇家学会学报B》网络版上报告说，在求偶炫耀中，如果跳舞的脚步轻盈，这种雄性的热带小鸟会比它们的竞争对手有更多的交配优势。
通过观看侏儒鸟交配舞蹈的高速录像，研究小组发现，那些动作比其他小鸟快几十毫秒的家伙在雌鸟中是最有魅力的。一些高难度的特技动作，例如后空翻，看来也让人印象深刻。
研究人员记录了雄鸟的心率，他们首次发现，心脏在求偶过程中全速跳动的雄鸟往往是更成功的“情人”。研究人员表示，雌鸟可能认为雄鸟的高能量、心肺功能和娴熟的运动技巧是作为一名父亲的优秀特征，并且是赋予后代的好基因。（生物谷Bioon.com）
生物谷推荐原文：
Proceedings of the Royal Society B: Biological Sciences DOI： 10.1098/rspb.2011.0382
Female choice for male motor skills
Barske, Julia; Schlinger, Barney A.; Wikelski, Martin; Fusani, Leonida
Sexual selection was proposed by Darwin to explain the evolution of male sexual traits such as ornaments and elaborate courtshipdisplays. Empirical and theoretical studies have traditionally focused on ornaments; the reasons for the evolution of elaborate,acrobatic courtship displays remain unclear. We addressed the hypothesis that females choose males on the basis of subtledifferences in display performance, indicating motor skills that facilitate survival. Male golden-collared manakins (Manacus vitellinus) perform elaborate, acrobatic courtship displays. We used high-speed cameras to record the displays of wild males and analysedthem in relation to male reproductive success. Females preferred males that performed specific display moves at greater speed,with differences of tens of milliseconds strongly impacting female preference. In additional males, we recorded telemetricallythe heart rate during courtship using miniature transmitters and found that courtship is associated with profoundly elevatedheart rates, revealing a large metabolic investment. Our study provides evidence that females choose their mates on the basisof subtle differences in motor performance during courtship. We propose that elaborate, acrobatic courtship dances evolvebecause they reflect motor skills and cardiovascular function of males.
