And they had the same survival and reproductive success as all the other birds.

它们的存活率和繁殖成功率和其它所有同类一样。

A preference for them is thus likely to enhance a man's reproductive success.

因此对他们的偏爱貌似能增强男性的繁衍成功率。

Or is there something about the bromance that holds the key to reproductive success?

还是兄弟情谊是成功繁衍后代的关键？

And this strategy almost doubles the reproductive success compared to those turkeys who ride solo.

与那些独自求爱的火鸡相比，这种策略几乎使繁殖成功率翻倍。

At least as evidenced by their reproductive success, which would be something to crow about.

至少在繁殖成功这方面证明了这一点，这是值得夸耀的。

These parrots have low reproductive success in the wild, so every chick counts.

这些鹦鹉在野外的繁殖成功率很低，所以每只雏鸟都很重要。

The first is that the cost of same-sex behaviour is high because energy and time spent engaged in it do not contribute to reproductive success.

第一件事是，同性行为成本更高，因为花在这上边的精力和时间无助于成功的繁殖。

All the ants have just one single intent on their mind, and that’s the reproductive success of the colony.

所有的蚂蚁脑子里只有一个意图，那就是蚁群的繁殖成功。

This goes for the reproductive success of macaque males and the lesbian monkey ladies of Animal Tracks.

这也适用于《动物足迹》中雄性猕猴和雌性女同性恋猴的繁殖成功。

Natural selection acts slowly, there are limitations to the changes it can make and it optimizes for reproductive success, not health.

自然选择行动缓慢，它可以做出的改变是有限的， 它优化繁殖成功， 而不是健康。

More generally, our bodies and brains have evolved for reproductive success, but we can use these brains to choose our own destinies.

更一般地说， 我们的身体和大脑已经进化为生殖成功，但我们可以利用这些大脑来选择自己的命运。

Birds that have access to extra nutrition are likely to be strong and healthy and have much higher levels of reproductive success.

获得额外营养的鸟类可能会变得强壮、健康，并且繁殖成功率更高。