A stuffed female cuckoo was attached to a tree or bush, and a recording of the bird's come-hither mating call was played out.

他们还在树上或灌木上安了一只雌性杜鹃玩偶，并播放这种鸟充满诱惑的求偶叫声的录音。

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These changes have been driven by women's increasing education and labor force participation, new gender roles, and the rise of what social scientists call assortative mating.

这些改变来源于以下驱动因素：女性受教育程度提高、加入劳动力大军，新的性别角色以及被社会学家称作的门当户对的婚姻比率正在增加。

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The species had its best breeding season for 130 years last year, measured by the number of "booming" males, whose distinctive mating call is a low-pitched, far-carrying "boom".

BBC: Rescued rare bird to be released

How deep a mating call?

FORBES: Magazine Article

And so, late last night, the professor of pandas made a call: at last Tian Tian was hormonally ready but her behaviour was "not conducive" to natural mating.

BBC: How do you get a panda pregnant?