A bill of many uses! A keel-billed toucan's bill serves a few purposes, but most surprisingly, it helps keep their temperature in check. Their large bill contains an intricate network of blood vessels which allow the bird to alter blood flow and core body temperatures. #EarthCapture by jeffreypatrickkarnes . . . . #KeelBilledToucan #ToucansOfInstagram #Ornithology #AmazingAnimals