The average male has some 180 tunes in his repertoire.

平均雄会180首曲目。

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

但是对于雄而言，歌声实际上只是由雄性激素引交配仪式的一部分内容。

A second male arrives and takes centre stage.

第二只雄飞来并且占取中心舞台。

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

雌不接受雄的确切原因不太清楚。

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

但中，通常只有当雌不雄身边的时候，才会生无性繁殖。

The male displays another feature—an extendable wattle.

雄另一特征——可延长的囊肉。

Male birds also have strange ornamentation on their skull.

雄头上也有奇异的装饰。

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

这只不是雌，而是一只没有长出羽冠的雄。

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

这种表演可能会包括几只雄一个竞技场上一同；它们会出叫声并炫耀它们的羽毛。

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的雄放入雌群中以期造一个新的珍珠群。

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

研究人员现很多雄学习其它物种的曲调。

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

到目前为止，没有证据表明雄保卫自己的领地时对这两种歌声变体做出不同反应。

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

他们把唱功好的雄放幼旁边。

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

为了帮助繁殖项目中的幼学习它们的音调，他们已经开始播放雄歌唱记录。

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

雄鸣唱自己独创的无序歌曲时，雌们非常反感，不予理睬。

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

“雄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。”

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

奥弗希望雌能被雄的叫声吸引，这样它们就会结合生子。

If they encountered a male, they'd record his song.

如果它们遇到一只雄，他们会录下它的歌声。

A higher proportion of males sing weird songs.

更高比例的雄唱奇怪的歌曲。

Believe it or not, females look pretty different to the males.

信不信由你，雌看起来与雄有很大的不同。