介绍： This is Scientific American's 60-second Science, I'm Eliene Augenbraun.
(CLIP: Loud bird call)
That incredibly loud song soaring over the quieter birds in the Amazon rain forest belongs to the male white bellbird. At 125 decibels, his short but startling songs are louder than a jackhammer.
"The white bellbird...

介绍： This is Scientific American's 60-second Science, I'm Eliene Augenbraun.
(CLIP: Loud bird call)
That incredibly loud song soaring over the quieter birds in the Amazon rain forest belongs to the male white bellbird. At 125 decibels, his short but startling songs are louder than a jackhammer.
"The white bellbird may be the loudest bird in the world. These birds are making extraordinarily loud noises. Noises that are so loud, they would be harmful to our hearing if you had to hear them up close."
Mario Cohn-Haft, curator of birds at Instituto Nacional de Pesquisas da Amazônia. He and his colleague Jeffrey Podos recorded the birds in their natural habitat. Their findings are in the journal Current Biology.
Birds like the kakapo and the Moluccan cockatoo have also laid claim to the loudness title. But the researchers think the new study has better instrumentation and data than most studies previously published in the scientific literature.

这里是科学美国人――60秒科学系列，我是艾琳·奥根布劳恩。
（音频剪辑：洪亮的鸟鸣声）
这个盖过亚马逊雨林中较安静鸟儿的极洪亮鸣叫声，是雄性白钟雀发出的声音。125分贝，它那短促但惊人的歌声比手提钻的声音还大。
“白钟雀可能是世界上叫声最大的鸟。这些鸟正在发出极其响亮的噪声。噪声大到，如果你不得不近距离听，那你的听力受到损害。”
亚马逊国家研究所的鸟类负责人马里奥·科恩·哈夫特说到。他和同事杰弗里·波多斯在白钟雀的自然栖息地记录了它们的叫声。他们的研究发表在《当代生物学》期刊上。
尖叫鹦鹉和摩鹿加凤头鹦鹉等鸟也曾获得“叫声嘹亮”的称号。但研究人员认为，这项新研究的仪器和数据比之前发表在科学文献上的大多数研究都要好。