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Chinstrap Penguins Survive on 10,000 Four-Second Naps Every Day
Penguins Have Perfected the Power Nap - WSJ
Penguin parents sleep for seconds at a time, study shows - The
Extreme Sleep Behavior Found in Antarctic Chinstrap Penguins - The
Fluffy Robot Penguin – Bedtime Math
By taking 10,000 four-second naps a day, chinstrap penguins can
Parent penguins take more than 10,000 tiny naps per day: new study
This Antarctic penguin sleeps 11 hours a day—a few seconds at a
Antarctica's chinstrap penguins get four seconds of shut-eye