Constantly on the nod, chinstrap penguins catch seconds-long bursts of sleep 10,000 times per day So named because of the narrow band on their heads, these penguins catch slumber every second they can ...

The art of nodding off appears to have been mastered by breeding chinstrap penguins, who take more than 10,000 naps a day, with each nap lasting an average of four seconds, according to a new study.

For some penguins, it means thousands of mini-catnaps a day, researchers discovered. Chinstrap penguins in Antarctica need to guard their eggs and chicks around the clock in crowded, noisy colonies.

Micronaps net chinstrap penguins over 11 hours of sleep a day, offering some rest while staying vigilant against predators and competitors.

For some penguins, it means thousands of mini-catnaps a day, researchers discovered. Chinstrap penguins in Antarctica need to guard their eggs and chicks around the clock in crowded, noisy colonies.

For some penguins, it means thousands of mini-catnaps a day, researchers discovered. Chinstrap penguins in Antarctica need to guard their eggs and chicks around the clock in crowded, noisy colonies.