Look at the bones inside a turkey. They aren’t solid. They’re pneumatic—full of air pockets. This connects to the bird’s lungs. It makes the skeleton lighter than a pile of broccoli.
Why? So the turkey can fly. Not far, but it can launch into a tree. A solid skeleton would be too heavy. Nature gave turkeys styrofoam bones. Genius.
Stuffing Recipe Inside Turkey at Lacey Chandler blog