Chinstrap penguins take thousands of 4-second naps a day so they can stay alert and guard their newborns around-the-clock, researchers say

• Chinstrap penguins take catnaps instead sleeping for a long period of time, researchers found.
• They do this so they can stay alert and watch their newborns around the clock, researchers found.
• The naps usually only last for about four seconds, the researchers found.

WASHINGTON (AP) — It's a challenge for all new parents: Getting enough sleep while keeping a close eye on their newborns. For some penguins, it means thousands of mini-catnaps a day, researchers discovered.