What could have caused the crows to caw?
什么能让乌鸦叫的？
I never saw a boy foxes and crows loved.
我还从没见过能让狐狸和乌鸦喜欢的男孩呢。
Corvids include ravens, jays, crows and magpies.
鸦科包括渡鸦、松鸦、乌鸦和喜鹊。
We first discovered the crows on Friday morning.
我们第一次发现乌鸦是在星期五早上。
It seems that these crows are exceptionally resourceful.
这些乌鸦看起来似乎特别聪明。
Significantly, the crows tended to use the sticks only to make their first contact with the object.
值得注意的是，乌鸦倾向于仅在初次与对象接触中使用小棍子。
Scientists have collected samples from crows in order to estimate the proportion of larvae in their diet.
科学家们从乌鸦那里收集了样本，以估计它们食物中幼虫的比例。
We've learnt a great deal about the ability of New Caledonian crows to use tools, and some very interesting research is being carried out into them.
我们已经了解了很多关于新喀里多尼亚乌鸦使用工具的能力，并且正在对它们进行一些非常有趣的研究。
Subsequently, the crows either ignored the object or dropped the tool and pecked at the object—which is very different from using the tool to get access to food.
随后，乌鸦要不就无视了该对象，要不就把工具丢到一边，然后用喙猛啄该对象——这和用工具觅食有很大不同。
Further experiments carried out at Oxford suggest that crows can also use sticks as tools to inspect all sorts of objects, possibly to assess whether or not they present a danger.
在牛津大学进行的进一步实验表明，乌鸦也会用棍子作为工具来检查各种物体，可能是评估它们是否构成危险。
So scientists want to find out much more about how the crows behave in their native habitat, and a team from Exeter and Oxford universities is carrying out research in New Caledonia.
因此，科学家们希望更多地了解乌鸦在它们的自然栖息地是如何活动的，而埃克塞特大学和牛津大学的一个研究小组正在新喀里多尼亚进行研究。
The cock crows and the dawn chorus begins.
公鸡叫了,众鸟的清晨鸣唱随之开始了。
First he imitated the voices of newly hatched crows.
一开始，他模仿了刚孵出的乌鸦的叫声。
He showed how crows call when they are happy and cheerful.
他向人们展示了乌鸦在高兴的时候是怎么叫的。
The arrival of the two crows broke the order of the writer's life.
两只乌鸦的到来打破了作者的生活秩序。
The writer changed her thoughts to the crows when she saw the little bird in her garden.
当作者在她的花园里看到那只小鸟时，她改变了对乌鸦的想法。
The researchers hypothesize that crows learn to recognize threatening humans from both parents and others in their flock.
研究人员猜测，这些乌鸦从父母和鸦群的其它成员那里学会了辨认有威胁的人类。
The crows caw when moon goes down.
月落乌啼。
Crows use tools and chimps display morality.
乌鸦使用工具，黑猩猩们展示出道德。
The result: wrinkles, fine lines and crows feet.
随之而来的就是：皱纹，细纹和眼角的皱纹。
Out shooting crows, he sees a beautiful girl in the neighbouring garden.
出外猎杀乌鸦时，他看到邻近花园里的一个美丽姑娘。
LICHTMAN: ...is that you have access to the crows in a way you didn't before.
我的意思是，我认为这是视频里最巧妙的事情之一。你能以一种以前不曾有的方式，观察乌鸦。
It was identified in birds (crows and columbiformes) in Nile delta region in 1953.
1953年，尼罗河三角洲区域的鸟类(乌鸦和鸽子)中首次发现该病毒。
His research team, however, soon learned that the crows weren't easily fooled twice.
然而，他的研究团队很快发现乌鸦不会第二次再轻易上当。
If you can't find someone to talk to, then do what crows do when they're alone: Sing.
如果你真是找不到个能说话的人，那就做乌鸦孤单时做的事吧：唱歌。
Crows fly through their branches, and at the end of it is a wood full of violets.
群鸦在枝头乱飞，稍远一点，有一片开满紫罗兰的树林。
Why crows and similar species are so closely attuned to humans is a matter of debate.
乌鸦和近似物种为什么能与人类和谐共处？
You know, maybe the crows that can get the larvae out of the trees have some advantage.
你知道，也许可以把树里的幼虫搞到手的乌鸦，真有一些优势。
In the gloaming, the crows flew in to gather for the night in a stand of bare oaks.
薄暮时分，鸦群飞向光秃秃的橡树枝条上过夜。
Mud-caked dogs roam empty streets, their barking and the cawing of crows the only sounds.
身上粘满泥土的狗在空荡的街道游荡，他们的吠叫和乌鸦的哑叫是这唯一的声响。
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