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Are diving seabirds of the northern hemisphere which, like penguins, have their legs at the back of their bodies and on land stand upright and are clumsy movers. They use their wings for both flying and swimming. The great auk (Pinguinus impennis), which lost the power of flight, was a northern version of a penguin. It was driven to extinction by over-exploitation; the last recorded specimen was collected in 1844.

M. V. Angel

Subjects: Zoology and Animal Sciences.

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