在晚上迁徙的鸟呢？
当一只被戴了标记环的鸟被重新捕获时，我们就能从报告中了解其迁徙路线、生长情况以及存活时间、寿命。
When a banded bird is recaptured and reported, we learn about its migration route, its growth, and how long it has been alive, its lifespan.
迁徙的鸟布满了灰白的天空。
有些鸟会飞到更温暖的地方迁徙过冬，在那里可以找到更多食物。
Some birds migrate by flying to a warmer place for the winter, where they can find more food.
很多种鸟常常混群共同迁徙，但是当他们停下来觅食休息的时候，你就会发现不同的种类有的在地面上，有的在中层高度，有的则在树顶处。
Mixed flocks of several species often travel together, but when they are feeding or resting you will spot different birds on the ground, at mid-level heights and at the tree tops.
观鸟者观察各种新的物种，从中他们不止能认识不同的鸟种，还能学到关于迁徙、鸟类行为学、食性、求爱还有鸟类领地的知识。
As birders observe new species, they not only learn about different birds, but they also learn about migration, bird behavior, feed preferences, courtship and bird territories.
它们来到这里已经是精疲力尽了，尽管米埔被渔民保护得很好，但是仍不足以为如此多的鸟在迁徙中补充体力提供食物。
They arrive exhausted and Mai Po, however well protected from fishermen and foreshoremen, lacks the food resources to allow so many birds to build up reserves of fat for their onward migration.
和其它迁徙鸟类一样，沙锥鸟需要飞行很长的距离，但是它们如何在如此长距离的飞行中不睡觉或者只睡很少的觉，原因尚不明确。
As with other migratory birds that fly long distances, it's unclear how great snipes can apparently fly for such long periods with little or no sleep.
动物拥有更敏锐的感官被详尽的记录着，狗有非同寻常的嗅觉，鸟可以依据天空的情况进行迁徙，蝙蝠利用声波定位食物。
The fact that animals have keener senses than humans is well-documented.Dogs have a remarkable sense of smell, birds can migrate using celestial cues, and bats can locate food with echoes.
动物拥有更敏锐的感官被详尽的记录着，狗有非同寻常的嗅觉，鸟可以依据天空的情况进行迁徙，蝙蝠利用声波定位食物。
The fact that animals have keener senses than humans is well-documented. Dogs have a remarkable sense of smell, birds can migrate using celestial cues, and bats can locate food with echoes.
本周三公布的一项研究显示，气候变化将迫使从非洲迁徙至欧洲的候鸟再多飞数百英里，对于已经精疲力尽的鸟来说，这可能会带来毁灭性的后果。
Climate change will force bone-weary birds migrating to Europe from Africa to log extra mileage, with possibly devastating consequences, according to a study released on Wednesday.
虽然以色列科学家称这只鸟是鸟类迁徙研究的一部分，但当地居民告诉沙特媒体，它很可能是“犹太复国主义者阴谋”的一部分。
While Israeli scientists say the bird was part of a migration study, local residents told the Saudi media that it was most likely part of a "Zionist plot."
野生保护区在国内和国际上闻名遐迩，是主要的观鸟胜地，成千上万的水鸟、陆鸟和岸鸟迁徙时在此停留。
The Wildlife refuge is nationally and internationally renowned as a prime birding spot where thousands of water, land and shorebirds stop during migration.
像所有好的观鸟，他发现记录每一个笔记本电脑，这样他可以追踪的物种，他以前从未见过这些鸟类是迁徙。
Like all good bird-watchers, he records every sighting in a notebook so he can track which species he has not seen before and which birds are migrating.
新的技术对科研工作帮助很大，科学家可以精确的判断鸟的方位，以及它们从越冬地飞往繁殖地的迁徙路径。
So this has been very helpful with recent work, locating exactly where birds are going, and trying to find out how they move from the wintering area to the breeding area.
当候鸟通常迁徙的秋季来临时，科学家让每只鸟都在相邻的两个房间中呆几小时，其中一个房间用假天竺葵而另一个用假常青藤装饰。
In the fall, when the birds normally migrate, the scientists let each bird spend a few hours in two adjacent Chambers, one decorated with fake geraniums9 and the other with fake ivy.
当候鸟通常迁徙的秋季来临时，科学家让每只鸟都在相邻的两个房间中呆几小时，其中一个房间用假天竺葵而另一个用假常青藤装饰。
In the fall, when the birds normally migrate, the scientists let each bird spend a few hours in two adjacent Chambers, one decorated with fake geraniums9 and the other with fake ivy.
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