Researchers have discovered that some penguin parents sleep for only seconds at a time around-the-clock to protect their eggs and chicks (Dec. 1)(AP video: Mike Householder)
Study shows penguin parents sleep for just a few seconds at a time to guard their newborns
Researchers have discovered that some penguin parents sleep for only seconds at a time around-the-clock to protect their eggs and chicks (Dec. 1)(AP video: Mike Householder)