The female signals her submission with open wings.

雌张开示服从。

Each may have just a single chance to impress a female.

只有一个机会来取得雌的芳心。

Birds make eggshells from materials from inside their hollow bones.

雌产卵以中空骨头里的物质为材料。

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

雌不接受的确切原因还不太清楚。

Warmer weather means the eggs of this female will have a chance of hatching.

温暖的天气让这只雌的卵有机会孵化。

When it's over, females crouch and wait to be mated.

战斗结束时雌们蹲伏下来，等待交配。

And for nightingales, it's the most elaborate song that apparently wins the day.

至于夜莺，最精心准备的歌曲无疑能够赢得雌芳心。

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

但在类中，通常只有当雌不在身边的时候，才会发生无性繁殖。

And such virtuoso singing seems to signal the female that this is a guy she can count on.

这样的艺术大师无疑是向雌发出这就是终身伴侣的信号。

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放入雌群中以期造一个新的珍珠群。

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

鸣唱自己独创的无序歌曲时，雌们非常反感，不予理睬。

So it's crucial for a female bird to pick as a mate the most promising father—both genetically and behaviorally.

因此对雌言，不管是基因角行为角度择偶最为关键的就是寻找一位最有前途的父亲。

I think the female bird is more sort of brown and beige.

我认为雌更像是棕色和米色。

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

奥弗希望雌能被的叫声吸引，这样它们就会结合生子。

But the researchers also plan to test whether the new dialect's popularity is driven by a female preference for novelty.

但研究人员也计划进行测试，看看这种新方言的流行是否是由雌对新奇事物的偏好所驱动。

Behind him was a beautiful red-beaked female, and a chick.

他身后跟着一只漂亮的红嘴雌，还有一只小鸡。

In May the females build a nest and lay their eggs.

【nest】雌在五月份筑巢产蛋。

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

刚开始，我们面临的第一个问题是雌对被隔离过的完全不感兴趣。

Mini-er males aren't uncommon in birds because lady birds have to produce eggs, and that takes a lot out of them, literally.

体型偏小在类中并不罕见，因为雌必须产卵，这确实会消耗掉很多。

If a female nests five times, five times 105, if my math is good today, should be 525 eggs.

如果雌下窝五次，五次105，如果我今天数学好的，应该是525个蛋。