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Constantly on the nod, chinstrap penguins catch seconds-long bursts of sleep 10,000 times per day

Nearly all animals need some form of sleep to survive, but not all of them sleep in the same ways as humans. Take chinstrap penguins (Pygoscelis antarcticus), the adorable two-foot-plus waddling birds named for the distinctive and dignified black stripes at the bottoms of their heads, which are indigenous to the islands and shores of the Southern Pacific and Antarctic Oceans....

Originally posted on salon.com