And Scientists have found the European nightjars, migratory birds, that travel between Europe and Africa, feed twice as much than moon-lit night.

科学家发现，欧夜鹰这类在欧洲和非洲之迁徙的候鸟平时的食量是月夜的两倍。

And migratory birds that extend their visits may provide competition for some avian natives.

同时，逗留时的候鸟也可能对一些本土鸟产生竞争。

Temperatures begin to cool and migratory birds set off on their southward journeys.

气温渐凉，候鸟踏上南迁的旅程。

The area's shallow salt lagoons are home to thousands of migratory birds as well as flocks of flamingos like these, whose bright pink plumage stands out against the arid landscapes of Bolivia's Altiplano region.

该地区的浅盐泻湖是成千上万候鸟和成群的火烈鸟的家园，这些火烈鸟明亮的粉红色羽毛与玻利维亚Altiplano地区的干旱地貌形成鲜明对比。

For several months until mid-November it recorded the night-time calls of migratory birds flying above.

在11月中之前的几个月里，它记录了夜鸟类迁徙时在空中飞行的叫声。

" I know we are up to the task, and I look forward to building on our successes, together, to recover other migratory bird species."

" 我知道我们肩上的任务，我也很向往在已经取得的成绩上继续和伙伴一起努力，以恢复其他鸟类的生存环境" 。

Every spring, migratory birds flood back to where they breed.

每年春天，候鸟都会涌回它们繁殖的地方。

People liked eating the migratory birds, and they disappeared from Europe.

人们喜欢吃候鸟，于是它们就从欧洲消失了。

Cryptochrome has been found in the eyes of several migratory birds.

人们在一些候鸟的眼睛里发现了隐色体。

The Nordic countries provide a home to millions of migratory birds.

北欧地区是数百万候鸟的容身之地。

If you want to help protect migratory birds, go to BirdCast.

如果您想帮助保护候鸟，请访问 BirdCast。

Earlier springs that confuse migratory birds, more efficient farming and the conversion of dilapidated buildings (good for nesting) into modern homes have all contributed to these woes.

造成这种灾患的原因包括迷惑候鸟的早春，高效的耕种以及危房（适宜筑巢）向现代房屋的转变。

Migratory birds, on the other hand, cantraverse entire hemispheres and end up just a couple miles from where they bred last year, using their senses alone.

而候鸟仅仅通过感知就能横跨整个半球，最后在去年繁殖几公里远的地方落脚。

Most migratory birds spend their winters in one habitat and then fly to a new area in the springtime to breed.

大多数候鸟在一个栖息地过冬，然后在春天飞往另一个地方繁殖。

The upshot: it may be more difficult than we thought to predict the effects of climate change on migratory birds.

预测气候变化对候鸟的影响，可能比我们想象得要困难得多。

These migratory birds traveled South from Northern states and Canadian provinces when migrating, but overhunting made them increasingly rare.

这些候鸟从北部各州和加拿大各省迁徙到南方，但过度捕猎使它们越来越少。

More habitats for migratory birds are appearing as the environment improves, added Li in an interview with China Daily.

李志军在接受《中国日报》采访时补充说，随着环境的改善，候鸟的栖息地越来越多。

Most of the content of a migratory bird is water, so the radars are well equipped for that detection.

候鸟体内的大部分成分都是水，因此雷达完全有能力进行探测。

Some 200,000 migratory birds fly to Duchang during winter, with the peak migratory season falling in November.

大约 20 万只候鸟在冬季飞往都昌，11 月是候鸟迁徙的高峰期。

Every Spring and Autumn, nearly 3 million migratory birds around the world stop here to replenish themselves.

每个春天和秋天，全世界的将近三百万的迁徙鸟儿停驻在这里，为自己补充能量。