Global Warming Threatens Penguins

Penguins, As Far as the Eye Can See

Male and female Chinstraps guard their eggs, which come in pairs, in shifts; one protects the nest while
Maria Stenzel / Corbis

Penguins, As Far as the Eye Can See
Male and female Chinstraps guard their eggs, which come in pairs, in shifts; one protects the nest while the other fishes for up to eight days. The colony at Zavodovski Island in the Antarctic is the world's largest Chinstrap breeding ground.

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