The Coa Valley provides a migratory corridor for rare species.

科阿山谷为稀有物种提供迁通道。

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 月是候鸟迁峰期。

Duffy-Anderson said large fish are often highly migratory.

达菲-安德森说，大型鱼类通常是度洄游。

Desert locusts are the world's oldest and most destructive migratory pest.

沙漠蝗虫是世界上最古老和最具破坏性迁害虫。

The Coa Valley provides a migratory corridor for rare species.

科阿山谷为稀有物种提供迁通道。

A more exact count could help salvage a migratory wonder.

准确统计可能有助于挽救一个迁奇迹。

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

每年春天，候鸟都会涌回它们繁殖地方。

So researchers analyzed six years of barnacle goose migratory tracking data.

因此，研究人员对白颊黑雁六年来迁追踪数据进行。

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。

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

人们在一些候鸟眼睛里发现隐色体。

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

北欧地区是数百万候鸟容身之地。

Remember the 70 percent of North American birds that are migratory?

还记得北美 70% 鸟都是候鸟吗？

Their culture has evolved around the migratory needs of the herds.

他们文化是围绕着鹿群迁需要而发展。

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

同时，逗留时间长候鸟也可能对一些本土鸟产生竞争。

They're currently endangered after a big drop in their migratory population.

黑脉金斑蝶目前濒临灭绝，这是由于它们迁数量大幅减少。

One of the two flycatcher subspecies is migratory. The other stays put.

两种王霸鶲亚种中，一种是迁性。另一种则待在原地。

The manta rays include one species that lives near reefs and another that's migratory.

蝠鲼是包括在其中生活在礁附近一个物种, 而另一种则有迁居习惯。

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

气温渐凉，候鸟踏上南迁旅程。

It has also become a popular stopover for a large number of migratory birds.

同时，对很多候鸟来说，它也变成一个受欢迎中转站。

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。