The average male has some 180 tunes in his repertoire.

雄鸟会180首曲目。

Male birds also have strange ornamentation on their skull.

雄鸟头上也有奇异装饰。

A second male arrives and takes centre stage.

第二只雄鸟飞来并且占取中心舞台。

The exact reason females do not accept the males was not clear.

雌鸟不接受雄鸟确切原因还不太清楚。

The male displays another feature—an extendable wattle.

雄鸟还展示另一特征——延长囊肉。

They found that males who sang unusual songs were less successful in attracting mates.

他们发现唱不同寻常情歌雄鸟成功吸引配偶能性不大。

This is not a female but a young male who hasn't yet developed that head crest.

这只不是雌鸟，而是一只还没有长出羽冠雄鸟。

Researchers found that a large number of male birds appear to be learning tunes only used by other species.

研究人员发现很多雄鸟在学习其它物种曲调。

But for male birds, music is actually part of a testosterone-fueled mating ritual.

但是对于雄鸟而言，歌声实际上只是由雄性激素引发交配仪式一部分内容。

But in birds, it usually only takes place when females are not around males.

但在鸟类中，通常只有当雌鸟不在雄鸟身候，才会发生无性繁殖。

They have also placed skilled male singers next to young learners.

他们还把唱功好雄鸟放在幼鸟旁。

One of these isolated males was added to a group of females to create a new finch colony.

接着他将一只隔离后雄鸟放入雌鸟群中以期造一个新珍珠鸟群。

Displays can involve several males displaying together in an arena; they call out and display their feathers.

这种表演能会包括几只雄鸟在一个竞技场上一同展示；它们会发出叫声并炫耀它们羽毛。

When he start singing his isolate unstructured song, they say " Yuk! " and they wouldn't go with him.

雄鸟鸣唱自己独创无序歌曲，雌鸟们非常反感，不予理睬。

So far, there's no evidence that the males react differently to the two variants when defending their territories.

到目前为止，还没有证据表明雄鸟在保卫自己领地对这两种歌声变体做出不同反应。

To help young birds in reproduction programs learn their notes, they have started playing male song recordings.

为了帮助在繁殖项目中幼鸟学习它们音调，他们已经开始播放雄鸟歌唱记录。

Ofer hoped that the females would find the male's call attractive enough that they would mate and create the next generation.

奥弗希望雌鸟能被雄鸟叫声吸引，这样它们就会结合生子。

A male led the flock with boisterous quacking.

一只雄鸟带着喧闹嘎嘎声带领着羊群。

" The males have dropped one of the notes, so instead of having three syllables repeating, it's actually two syllables repeating."

“雄鸟漏掉了其中一个音符，因此歌曲结尾不是三个音节重复，而是两个音节重复。”

In the beginning, the first problem that we had is that the females were not very interested in the isolate male.

刚开始，我们面临第一个问题是雌鸟对被隔离过雄鸟完全不感兴趣。