Infrared Images Reveal Frigid, Purple Penguins

Infrared imaging has revealed that much of a penguin’s outer surface is cooler than the surrounding air -- except, of course, for their unfeathered eyes, beaks, and feet -- suggesting that extreme radiative cooling draws heat from a penguin’s feathery ...

Source: http://www.wired.com/wiredscience/2013/03/infrared-penguins/

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