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徙害虫。

The Coa Valley provides a migratory corridor for rare species.

科阿山谷为稀有物种提供了迁徙通道。

The Coa Valley provides a migratory corridor for rare species.

科阿山谷为稀有物种提供了迁徙通道。

A more exact count could help salvage a migratory wonder.

更准确能有助于挽救一个迁徙奇迹。

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

每年春天，候鸟都会涌它们繁殖地方。

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 月是候鸟迁徙期。

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徙追踪数据进行了分析。

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

人们在一些候鸟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容身之地。

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

他们文化是围绕着鹿群迁徙需要而发展。

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

同时，逗留时间更长候鸟也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，这是由于它们迁徙数量大幅减少。

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

两种王霸鶲亚种中，一种是迁徙性。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。

Most migratory species travel at night, when lights near buildings can distract or disorient them.

大多数候鸟在夜间飞行，那时建筑物附近灯光会分散它们注意力或使它们迷失方向。

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

在11月中旬之前几个月里，它记录了夜间鸟类迁徙时在空中飞行叫声。

It would help us make consensual decisions on what actions to prioritize to preserve the migratory phenomenon.

这将有助于我们就优先采取哪些行动来保护移徙现象作出协商一致决定。

But they had trouble putting on enough weight to fuel the next leg of their migratory journey.

不过，由于它们无法增加足够体重，所以它们没有动力飞到迁徙途中下一个停留地。

The wetlands near the head of the canyon are an important wintering site for many migratory birds.

大峡谷起点附近雅江湿地是许多候鸟重要越冬地。