这个名单包括了从大灰狼到美洲鹤的所有物种。
This list includes everything from the timber wolf to the whooping crane.
还有多少野生的美洲鹤？
丹顶鹤是世上第二罕见的鹤，仅次于美洲鹤，目前全球幸存数量低于2500只。
Known in Japan as tancho (red peak), the red-crowned is the second rarest crane species, after the whooping crane, with a world population of fewer than 2, 500 birds.
丹顶鹤是世上第二罕见的鹤，仅次于美洲鹤，目前全球幸存数量低于2500只。
Known in Japan as tancho (red peak), the red-crowned is the second rarest crane species, after the whooping crane, with a world population of fewer than 2,500 birds.
但这仅对那些有安全栖息地的范围内的美洲鹤而言的。 可是那些野生的美洲鹤怎样才能坚持下去吗？
But only with healthy habitat across their range can the wild flock persevere.
大小胜过数量，在德克萨斯州的私人牧场里，一只美洲鹤使一群黑腹树鸭分散开来，权且作为一个勇敢的饲养员。
Size trumps numbers as a crane scatters black-bellied whistling-ducks near a game feeder on a private Texas ranch.
尽管人们要进入到伍德布法罗保护区的美洲鹤栖息地是受到限制的，可是食肉动物像鸟类、狼和熊能够掠夺那里的美洲鹤郡落。
Though human access to crane habitat in Wood Buffalo is restricted, predators like birds, wolves, and bears can rob the flock.
亨利站在那儿聚精会神地看着，期待每一页新的神奇，当看到沙丘鹤，美洲骨顶鸡，大海雀，大啄木鸟时，他欣喜的叫了起来。
Henry stands attentively, waits each time for the new wonder, emits small noises of pleasure for each Sandhill Crane, American Coot, Great Auk, Pileated Woodpecker.
亨利站在那儿聚精会神地看着，期待每一页新的神奇，当看到沙丘鹤，美洲骨顶鸡，大海雀，大啄木鸟时，他欣喜的叫了起来。
Henry stands attentively, waits each time for the new wonder, emits small noises of pleasure for each Sandhill Crane,American Coot, Great Auk, Pileated Woodpecker.
亨利站在那儿聚精会神地看着，期待每一页新的神奇，当看到沙丘鹤，美洲骨顶鸡，大海雀，大啄木鸟时，他欣喜的叫了起来。
Henry stands attentively, waits each time for the new wonder, emits small noises of pleasure for each Sandhill Crane,American Coot, Great Auk, Pileated Woodpecker.
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