Penguins may look chubby and clumsy, but they are actually quite flexible. They can tuck their bills under their wings while sleeping. 

Photographer Thomas Vijayan captured a funny moment when a penguin appeared to have lost its head as it took a rest in the grasslands of the Falkland Islands. The penguin was leaning its head away from the photographer, therefore the illusion was created. 

Another penguin kept watch for around 30 minutes while his fellow took a nap.

Penguins can sleep while standing or in water. They usually take short naps during the day and evening. 

(All photos via VCG)

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