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Male Bird Links Its Call to Deadly Enemy to Get Female Attention

追美眉？来点恐怖场景吧

It’s one of the oldest moves in teen dating. Head to a scary movie. As soon as the scary music kick in, your date cuddles closer for comfort. Well, some birds may have the same idea. Splendid fairy-wrens are small, sexually promiscuous birds native to Australia. It turns out that males get the attention of potential mates by making their move after a predator announces its presence. The research was published in the journal Behavioral Ecology.

青少年约会时去看恐怖电影已经见怪不怪了。恐怖音乐一开始，你的约会对象就会抱紧你以求安慰。其实，某些鸟类也有这种想法。色彩鲜艳的细尾鹩莺是澳大利亚的本地鸟类，它们体型娇小，而且喜欢性滥交。现已证明这种雄鸟为了吸引潜在配偶的注意，会在食肉动物发出声音后采取行动。该项研究刊登在《行为生态学》杂志上。

[Bird sound] That’s the sound of butcher-birds, which prey on splendid wrens. Every time male wrens hear that cry, they sing this in response [wren sound]. Researchers say the calls become layered atop one another, almost like a duet.

[鸟儿的声音]这是屠夫鸟的声音，它们会捕食这种美丽的鹩莺。每当雄性鹩莺听到屠夫鸟的啼叫，它们就会这样回应[鹩莺的声音]。研究人员表示，这种声音一层叠着一层，像二重唱似的。

The scientists tested the response of female wrens by playing recorded bird calls. They played just the male fairy-wren call. Then they played the trill of the wrens singing immediately after the butcher-birds. The females became significantly more alert—looking to the sound or singing in response—after hearing the two calls together than they did if they heard just the wren. And so for both teens and wrens, a bit of fear might help a guy get the chick.

科学家通过播放录制的鸟类啼叫来考察雌性鹩莺的反应。他们先单独播放雄性细尾鹩莺的声音，然后再播放紧接着屠夫鸟叫声的鹩莺啭鸣。与只听到鹩莺叫声相比，雌性鹩莺在听到两种声音混合时更加警觉，会盯着声音发出的地方。因此，对于青少年和鹩莺来说，一点点的恐惧可以帮你泡到美眉哦。^-^

—Cynthia Graber 

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