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This image provided by Won Young Lee shows wild chinstrap penguins on King George Island, Antarctica. Researchers have discovered that some penguin parents sleep for only seconds at a time around-the-clock to protect their eggs and chicks. Sensors were attached to adult chinstrap penguins in Antarctica for the research. The results published Thursday, Nov. 30, 2023 show that during the breeding season, the penguins nod off thousands of times each day but only for about four seconds at a time. (Won Young Lee via AP)While the adults don't face many natural predators in the breeding season, large birds called brown skuas prey on eggs and small fuzzy gray chicks. Other adults may also try to steal pebbles from nests. So the devoted parents must be always on guard.
Originally published at The Associated Press