But recent data from light-level geolocators show that terns actually travel more than twice as far each year, possibly to take advantage of prevailing winds.

但最近来自光级地理定位仪数据显示，燕实际上每年旅行距离是原来两倍多，可能是为了利用盛行风。

But one species, the arctic tern, flies to northern Europe all the way from the Antarctic. No animal on earth migrates this far.

而有一种鸟类，北极燕，却从南极洲一路飞抵北欧，地球上没有任何动物能迁徙这么。

This journey is a round-trip of up to 35,000km long, which makes the Arctic tern's migration the longest of any bird.

这一往返旅程长达 35,000 公里，这使得北极燕迁徙是所有鸟类中最长。

Skimmers get their name from their unusual feeding technique--their extended lower bill detects fish just below the water surface.

燕因它们特捕食技巧而命名——它们延伸下喙可以探测出距离水面不深处鱼。

His ignoble resource, alas! is to attack a dull and timorous bird, the noddy, famous as a fisher.

唉，可叹啊，军舰鸟那不光彩一面就是去攻击一只迟钝又胆小鸟——以“渔夫”之名著称燕。

Usually during June, the white birds would be watching their eggs as they begin to hatch.

燕通常六月开始孵化，它们会紧紧看守自己鸟蛋。

This means that arctic terns can rack up over 2 and a half million kilometers of flight in a lifetime — enough for three round trips to the moon.

这意味着北极燕一生可以积累超过 250 万公里飞行距离，足够三次往返月球。

Back in 2010, an international research team fitted tracking devices to birds they believed to be special — Arctic terns.

早在 2010 年，一个国际研究小组就在他们认为很特殊鸟类——北极燕身上安装了跟踪设备。

It's ironic that this man-made car park made out of crushed oyster shell should become a substitute.

很讽刺是，这个停车场充满了人造牡蛎壳碎屑，现在却成为了燕替代栖息地。

Another marathon migrator, the Arctic tern, has long been credited with the longest migration for its annual round-trip flight between the Arctic and Antarctic — an estimated 40,000 km in total.

另一种马拉松式迁徙者——北极燕，因其每年在北极和南极之间往返飞行而长期被认为是最长迁徙——估计总共有4万公里。

Skimmers raise their chicks on a fish diet. But they serve their portions whole which can cause problems for their young.

燕用鱼喂养它们幼鸟。但是他们确是为大部分提供，因此会对幼鸟产生不好影响。

Arctic terns begin their migration in the Northern hemisphere in the summer, which is breeding season.

北极燕在夏季开始在北半球迁徙，这是繁殖季节。

What if all the girls with me are sixes and sevens and the only girls I can friendzone look like Canyon Mule, Sea Donkeys and Trailer Swifts?

如果我身边女孩都只是六七分， 而唯一能被我划入“朋友区” 女孩长得像峡谷骡、海驴和拖车燕那样，那该怎么办呢？

Scientists are trying to boost the populations of three species: the bridled tern, brown noddy, and the Audubon's shearwater.

科学家们正试图增加三种物种数量：白斑燕、褐燕和奥杜邦海。

His father showed him a white, woman-like figure among the frost pat-terns.

他父亲在冰霜燕中向他展示了一个白色女人般身影。