Puffins stay cool thanks to their large beak

Tufted puffins regulate their body temperature thanks to their large bills, an evolutionary trait that might explain their capacity to fly for long periods in search for food.

CT scans reveal birds' built-in air conditioners

Birds' beaks come in an incredible range of shapes and sizes, adapted for survival in environments around the world. But as a new study from The Auk: Ornithological Advances reveals, there's even more to bird beaks than meets ...

Brightly colored bird bills indicate good health

Troy Murphy has found female bill colour reflects the health of the bird. Females with more colourful bills have higher antibody levels, indicating greater strength and the ability to fight off invaders.

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