image: This is a toucan as seen with infrared thermography. The warmer areas are in yellows, and the cooler areas are purples. This image accompanied the research article "Heat Exchange from the Toucan Bill Reveals a Controllable Vascular Thermal Radiator," by G.J. Tattersall et al. appearing in the July 24, 2009, issue of Science. view more
Credit: Image courtesy of Glenn Tattersall