Nature Notebook
- Eileen Carlson
- Jan 11, 2024
- 1 min read
Our winter birds are amazing creatures. Humans rely upon heating systems to stay warm; birds rely upon their bodies. A bird’s “furnace” produces a great deal of heat. The bird’s feathers trap this heat in an insulating layer of air. Fluffed feathers create even more air spaces to hold heat. Birds have 25 to 30 percent more feathers in winter to keep them warm.