Many ornithologists specialize in very rare or endangered bird species rather than focusing on more common birds.

相对于关注常见鸟类，很多鸟类学家更是稀有和濒危鸟种的专家。

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Large parts of the mountainous island are swathed in cloud. These lush and mossy forests are home to the colorful Hawaiian honeycreeper, an endangered bird species.

这个多山岛屿的大部分地区都被笼罩在云雾之中，苔藓将繁茂的森林覆盖得严严实实，这儿也是多姿多彩的夏威夷旋蜜雀的故乡，夏威夷旋蜜雀是一种濒临灭绝的鸟类。

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The latest version of the department's annual State of the Birds report shows that nearly a third of the nation's 800 bird species are endangered, threatened or suffering from population decline.

该部门年度鸟类报告的最新数据显示，美国大约800个鸟类物种的三分之一由于种群数量减少而濒临灭绝。

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More than one third of all threatened or endangered bird species in America live on the Hawaiian Islands.

VOA: special.2009.05.12

Contractor crews are scrambling to get the trash removed by the end of March, before truck access is severely restricted to protect the nesting areas of the endangered bird species known as the piping plover.

WSJ: NY's Fire Island debris effort faces bird deadline

However, starling numbers in Wales have fallen by two thirds since 1994 and the bird is on an endangered species list.

BBC: Starlings flocking over the old college, Aberystwyth

Holder said his lawyers are looking for potential violations of the Clean Water Act, The Oil Pollution Act, The Migratory Bird Treaty Act and Endangered Species Acts, and other criminal statutes.

FORBES: For BP, It Gets Even Worse