Adelie penguins at the Cape Royds rookery.

罗伊兹海角群栖地的阿德利企鹅。

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Adelie penguins, for instance, employ yawning as part of their courtship ritual.

比如说吧，对大型企鹅来讲，张大嘴打哈欠就是它们求偶仪式中的一部分。

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Tens of thousands of newly-born Adelie penguins are freezing to death recently as freak rain storms are hitting Antarctica.

南极地区最近连续爆发反常暴风雨，导致成千上万只新生阿德利小企鹅活活冻死。

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Scientists studying Adelie penguins on Antarctica's western peninsula see that species suffering major declines.

CNN: Ice shelf collapse: What does it mean?

The model has been honed using 43 years' worth of observations of an emperor colony in Antarctica's Terre Adelie.

BBC: Emperor penguins face extinction

He says he loves studying Adelie penguins, partly because they're so out there.

NPR: Penguins Helped and Hurt by Changing Climate