北美产的燕八哥，和牛在一起并在其他鸟类的巢中下蛋。
North American blackbird that follows cattle and lays eggs in other birds' nests.
杜鹃将卵产在其他鸟类的巢，欺骗其他鸟类相信小杜鹃是他们的孩子。
Cuckoos lay their eggs in other birds' nests, fooling them into believing the chick is one of their young.
杜鹃有很好的理由去模仿鹰，由于莺和其它的小型鸟类在它们的巢中产卵，自然这些小型鸟类就很害怕鹰，并且对鹰敬而远之。
Cuckoos would have good reason to do so, since the warblers and other small birds in whose nests they lay their eggs are understandably frightened of hawks, and give them a wide berth.
一旦将这些鸟类标本放置好，这两位研究人员就记录巢主人的反应。
Once the stuffed birds were in place, the two researchers recorded the reactions of the nestholders.
信鸽有高超的认路归巢的本领。科学家们已经揭开了信鸽认路的奥秘：这些鸟类飞行家像人类一样沿着公路前进。
The secret of carrier pigeons'uncanny ability to find their way home has been discovered by scientists: the feathered navigators follow the roads just like we do.
也许这样便于知更鸟识破其巢寄生的鸟类将自己蛋放进知更鸟巢吧！
Perhaps this enables robins to spot when a parasitic bird tries to add its own eggs to the nest.
皇家鸟类保护协会的一位发言人说：“所有的筑巢鸟类都受到法律的保护，有一些鸟确实喜欢把巢筑在奇奇怪怪的地方。”
A spokeswoman for the RSPB said: "All nesting birds are protected by law and some do pick weird and wonderful places to nest."
为了进行它们的测试，戴维斯博士和韦伯尔根博士将几种鸟类标本放到了莺的芦苇巢附近，用来观察这些巢主人的反应。
To carry out their test, Dr Davies and Dr Welbergen put stuffed birds near reed-warbler nests, to observe the nestholders' reactions.
终上所述，科学家如何解释知更鸟蛋是耀眼的纯蓝色呢？也许这样便于知更鸟识破其巢寄生的鸟类将自己蛋放进知更鸟巢吧！
Given all this, how do scientists explain the fact that robin's eggs are an eye-catching, unmarked blue?
鸟类学家们研究发现，在整个繁殖季节的过程中，雀蛋一产下就弃巢而去的行为提高了这些遗弃巢穴的山雀的产雏量。
They found that, over the course of the breeding season, deserting the nest once eggs had been laid boosted the number of descendants produced by the bird that fled.
信鸽有高超的认路归巢的本领。科学家们已经揭开了信鸽认路的奥秘：这些鸟类飞行家像人类一样沿着公路前进。
The secret of carrier pigeons 'uncanny ability to find their way home has been discovered by scientists: the feathered navigators follow the roads just like we do.
更重要的是，在每年的春天和夏天，它们是鸟类荫蔽繁茂的驻巢场所。
In addition, they offer shady, leafy nesting sites in the spring and summer.
有些攻击性的鸟类同一品种和颜色，尤其是防御性的巢。
Somewhat aggressive to birds of the same species and color, especially defensive of the nest.
举例来说，当鸟类入巢时，巢内的温度会急遽上升。
When a bird enters a nest, for instance, the temperature rises quickly.
这个巢较像是鸦科鸟类的，会不会是家鸦的家呢？
This one looks more like a corvid nest. Could it belong to the House Crows?
晚成性幼雏留巢时间的长短也不相同：雀形目鸟类与孵卵日期大致…
To stay late into the nest of chicks is not the same length: passerine birds and hatchery date generally …
它们大多吃腐肉，地上造巢鸟类的蛋，和浆果。
They eat mostly carrion, the eggs of ground-nesting birds, and berries.
通过草原鸟类在巢位选择时对巢址资源分割的研究，揭示了草原鸟类群落的集团结构，共分为三个集团，即：高密度、高草营巢鸟类集团；
There exists resource partition in nest-site selection among grassland birds, there are three guilds: nesting in higher and denser grass birds guild;
北美红雀的生存状况似乎与巢捕食者甚至鸟类饲养者没有关系。 但美国罗宾斯讲述了一个不同的故事。
The survival of Northern Cardinal nestlings did not seem to be related to the presence of these nest predators or even to bird feeders.
椴密度与树冠营巢鸟类的种类存在显著负相关关系。
The density of Manchurian linden and the tree-crown -nesting birds shows the conspicuous negative correlation.
椴密度与树冠营巢鸟类的种类存在显著负相关关系。
The density of Manchurian linden and the tree-crown -nesting birds shows the conspicuous negative correlation.
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