Mating blackbirds will defend their territory against intruders.

乌鸫交配时会保护自己的地盘，不允许外来者侵入。

Now when they emerge in the spring from hibernation, the mating process begins.

现在，当它们从冬眠中醒来时，交配的过程就开始了。

Play can also provide practice in social behaviors needed for courtship and mating.

玩耍还可以为求爱和交配所需的社会行为提供练习。

In studies, we found that when it comes to reproduction, freezing diminishes the mating performance of males.

我们在研究中发现，在繁殖方面，严寒会削弱雄性的交配表现。

Professor, isn't it possible that animals groom because they've got messed up a little from fighting or mating?

教授，难道动物梳毛不可能是因为它们在争斗或交配中弄得一团糟吗？

If the male frog could manage not to go through this freezing cycle, he'd probably have more success in mating.

如果雄蛙能够设法不经历这样的冻结周期就更可能交配成功。

When female cowbirds raised in isolation in sound-proof chambers were exposed to recordings of male song, they responded by exhibiting mating behavior.

当把雌性牛鹂单独养在隔音的房间里，让它们听到雄性的歌声，它们就会表现出交配行为。

During the rutting season the big boars have the most terrible mating battles.

在发情期，大野猪们会为求偶而展开激烈的争斗。

Their mating ritual is just so impersonal.

它们的求偶仪式是如此的没有人情味。

When female cowbirds raised in isolation in soundproof chambers were exposed to recordings of male song, they responded by exhibiting mating behavior.

当雌性牛鹂被单独养在隔音的房间里，听到雄性歌声的录音，它们就会表现出求偶行为。

The positive and negative di-mon mating hybrids are homogenous heterokaryons in Lentinula edodes.

香菇双单杂交后代是同质异核体。

This study indicate that di-mon mating hybrids are homogenous heterokaryons in Lentinula edodes.

本研究表明，香菇双单杂交后代是同质异核体。

Males accomplish this feat by embracing the object of their affection in a tight mating "hug" called amplexus.

雄蟾蜍要完成这一壮举，必须紧紧拥抱自己的“心上人”，即“抱合”。

A mating ball of anacondas.

求偶的水蟒团成一个球。

That is because it breaks up optimal mating patterns.

那是因为它打破了理想的配偶模式。

This means "the males are more efficient at mating," Crews says.

克鲁斯表示，这就意味着“这些雄鼠在求偶上很有效率”。

The connection, then, is that both music and murder pertain to mating.

因此，音乐和谋杀之间的联系是有关配偶之间的。

It could signal high status, which would be adaptive in terms of mating.

男性的这些表情特征可能表明他们拥有较高的地位，这在繁衍后代方面是很有利的。

Deployed properly, they bring the rewards of status and better mating opportunities.

开展得当，它们会彰显身份地位，带来更好的交际机会。

It is here that the mating habits of the white-fronted parrot and Homo sapiens diverge.

从这里开始，白顶鹦鹉接下来的行为就和咱们人类不同了。

The Internet is the ultimate mating ground for ideas, the supreme lekking arena for memes.

因特网是思想观点的最终交流阵地，是迷因的最潜在的竞技场。

Researchers have long recognized that male-female mating systems revolved around exchanges.

研究者们很早就确认男性-女性婚配体系包括了交换的概念。

Male humpback whales are famed for the loud, long and complex songs they make during the mating season.

雄性座头鲸以“嗓门大”“身型长”“擅长复杂歌曲”闻名于世界。

So, if hydrogen and oxygen molecules are not simply mating up, just what has been the origin of our water?

那么，既然氢气和氧气分子很难结合，那么我们现在的水是怎么产生的？

Spring is their estrus, the sound all time in night like crow blood is for beckoning their 'Mating objects'.

春天是它们的发情期，夜间啼血般地叫个不住，是召唤‘婚配对象’哩！

Mating displays include beating the water with branches and river grasses, and "trophy lifting" of live turtles.

实力展示还包括用树枝和河草击打水面，像捧奖杯一样举起活乌龟。

So the investigators speculate that males might synchronize to a single common pitch as a sort of mating beacon.

因此科学家们推测雄性蓝鲸们也许会一致地发出同一种单一频率的叫声作为求偶的信号。