The migratory fish are four: the reproductive migration feeding migratory and migratory warming, the winter migration.

An American migratory songbirdDolichonyx oryzivorus, the male of which has black , white , and yellowish plumage.

长刺歌雀美洲鸣鸟,一种候鸟(长刺歌雀).

Habits: Uncommon Spring migratory bird and winter visitor.

生态习性: 为春秋普遍过境鸟,与稀有冬候鸟.

Migratory birds fly long distances between a winter home and a summer home.

候鸟要在冬巢和夏巢之间飞很远的距离.

Most migratory farm workers earn very little indeed by comparison with other'workers.

大部分移民过来的农业工人的收入与当地人相比确实非常低.

A migratory bird that stops in a particular place for a limited period of time.

侯鸟在一特定的地方停留一段有限时间的一种迁移鸟类.

Little is known about the migratory habits of these huge fish.

对于这些大鱼的洄游习性知之甚少.

The positive rate of migratory birds is higher than birds.

候鸟的阳性率极显著高于留鸟.

The main protection for necked cranes and other migratory birds and their habitat.

主要保护对象为黑颈鹤等候鸟及其栖息环境.

Besides migratory birds, what other animals have the habit of migrating?

除了候鸟, 还有哪种动物有移居的习性?

The mechanism of influence of the magnetic flux density on migratory behavior was discussed.

并对磁场强度影响初晶硅迁移的机制进行了探讨.

Initial stage resistance against aggression, plant of Chinese coastal portion is inward the ground is migratory.

抗战初期, 中国沿海部分工厂向内地迁移.

migratory birds

候鸟

The region, which has several large lakes, is known to lie along migratory routes.

这个地区, 有几个大型湖泊, 位于候鸟的迁徙路径中.

This kind of migratory bird migrates whenever autumn comes.

这种旅鸟每到秋天都要进行迁徙.

Darkness swallowed millions of planets like tidewater. sunflowers withered, flocks of migratory birds attending the funeral.

黑暗像潮水吞没几百亿个星球. 向日葵大片枯死.候鸟成群结队地送葬.

The part of migratory birds play in spreading the virus is still being studied.

一部分候鸟在传播该种病毒方面的作用现在仍处于研究阶段.

...migratory farm labour.

流动的农业劳动力

The migratory bird is a host of the wetland.

候鸟是湿地的主人.

On 20 th, a migratory bird flies from the north woods, revolves the spacious square to circle.

20日, 一只候鸟从北边的树林里飞来, 围绕着空旷的广场盘旋.

As a kind of migratory bird.

啊,丹顶鹤不是一种候鸟吗.