Birds are like winged sentinels, signaling our planet's future. They are disappearing at a phenomenal rate, all across the world.

鸟类就像长翅膀的哨兵，预示了我们所居星球的未来。在全球范围内，他们正在以惊人的速度消亡着。

youdao

Birds are like winged sentinels, signaling our planet's future.

鸟类就像长翅膀的哨兵，预示了我们所居星球的未来。

youdao

A flock of red-winged blackbirds. 5, 000 of these birds recently died in Arkansas; Wikimedia Commons image.

最近在阿肯色州成群的红翼黑鸟约有5000多只发生了死亡。

youdao

Other birds, like the red-winged blackbirds and eastern bluebirds, are laying eggs earlier because of warmer temperatures.

VOA: special.2009.05.12