Some residents voiced concern that the rice could threaten certain species of rare migratory birds.
一些居民担心这种大米会威胁到某些稀有候鸟的生存。
To test the idea, caged night-migrating birds were placed on the floor of a planetarium during their migratory period.
为了验证这个想法，这些在夜晚迁徙的候鸟被关进笼子里，并且在它们的迁徙期间被放置在一个天文馆的地面上。
He noticed that as they fluttered around in the cage, they often launched themselves in the direction of their normal migratory route.
他注意到，当它们在笼子里到处飞的时候，通常会朝着常规的迁徙路线的方向。
Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.
在克雷默早期的研究中，他发现被关在笼中的候鸟在它们通常开始在迁徙的大致时间会变得非常不安。
They are important and necessary feeding and breeding grounds for migratory birds.
他们是候鸟必不可少的觅食和繁殖地，十分重要。
In 1934, with the passage of the Migratory Bird Hunting Stamp Act (Act), an increasingly concerned nation took firm action to stop the destruction of migratory waterfowl and the wetlands so vital to their survival.
1934年，随着《候鸟狩猎印花税法案》的通过，为阻止对迁徙的水禽以及对水禽生存至关重要的湿地的破坏，一个日益感到担忧的国家（指美国）采取了坚决的行动。
About 98 cents of every duck stamp dollar goes directly into the Migratory Bird Conservation Fund to purchase wetlands and wildlife habitat for inclusion into the National Wildlife Refuge System—a fact that ensures this land will be protected and available for all generations to come.
每1美元的鸭票中约有98美分直接转入候鸟保护基金，用于购买湿地和野生动物栖息地，将其纳入国家野生动物保护区系统——这一做法使得土地受到长久的保护。
The differences in feeding preferences lead, in turn, to differences in migratory habits.
摄食偏好的差异，又导致了迁徙习惯的不同。
Any of migratory songbirds of the family Turdidae usually have brownish upper plumage.
任何一种鸫科迁徒鸟类的上部羽毛通常为褐色。
Can migratory birds carry H5N1 over long distances?
候鸟会长距离携带H5N1型禽流感病毒吗？
Do migratory birds spread highly pathogenic avian influenza viruses?
候鸟是否传播高致病性禽流感病毒？
For photo of Northern Harriers, Bear River Migratory Bird Refuge, ut.
这张白尾鹞照片摄于犹他州贝尔河候鸟保护地。
The Salyan Rayon is located near wetlands frequented by migratory birds.
萨利亚内区地处经常出现候鸟的湿地附近。
Deaths in migratory birds, infected with the virus, have also been reported.
还报告了受该病毒感染的候鸟的死亡。
As the season changes, migratory birds begin to arrive at the coastal wetland.
随着季节的变化，候鸟开始陆续到达沿海的湿地。
The migratory birds gather in flocks along the coast and gradually drift southward.
候鸟沿着海岸成群聚集，并逐渐南移；
The hours were lengthy, the work difficult and migratory and the accommodations rough.
工作时间漫长，工作艰苦而且需要奔波，食宿条件简陋。
The study, appearing Oct. 29 in Nature, may improve conservation efforts for migratory birds.
该研究发表于10月29日的《自然》杂志，候鸟保育研究有了新进展。
The park is also the domain of the Porcupine caribou herd and half a million migratory birds.
公园也是豪猪、驯鹿群和50万候鸟所占有的地方。
To conserve energy, migratory birds prefer tailwinds, and are willing to wait for good weather.
为了节省体力，鸟儿们更喜欢顺风，它们期待着天气转好。
Their case is that the park could violate the Endangered Species Act and the Migratory Bird Treaty Act.
他们指控这座风电站可能违背了濒危物种保护法案，及候鸟条约法案。
The role of migratory birds in the spread of highly pathogenic avian influenza is not fully understood.
候鸟传播高致病性禽流感的作用尚不完全清楚。
The livestock on the green side was managed in a way designed to mimic the great migratory herds of Africa.
在草木葱翠的一边，人们模仿非洲草原上动物的迁移的模式对牲口进行管理。
Countries located along migratory routes need to be vigilant for signs of disease in wild and domestic birds.
处于候鸟回游路线的国家必须警惕野鸟和家禽患病的迹象。
A cell in the eye may be worth two in the beak, at least when it comes to a migratory bird's magnetic compass.
鸟的眼睛中的细胞可能会是鸟嘴里细胞价值的两倍，至少当谈到候鸟的磁性罗盘来说是这样。
They are also highly migratory, and will follow warm ocean currents for hundreds and even thousands of miles.
他们还会高度洄游，可以循着海洋中的暖流漫游到数百甚至数千英里处。
Apart from aesthetics, the threat to migratory birds is the most frequently cited argument against wind farms.
反对风电站的理由，除了从美观上，还有一条经常被提到的理由，即对候鸟的威胁。
Researchers have focused on how warming trends in temperate breeding areas disrupt the sensitive ecology of migratory birds.
此前，已有调查人员把重点放在了“暖动向”在影响温带繁殖区怎样影响候鸟敏感生境的。
Researchers have focused on how warming trends in temperate breeding areas disrupt the sensitive ecology of migratory birds.
此前，已有调查人员把重点放在了“暖动向”在影响温带繁殖区怎样影响候鸟敏感生境的。
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