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### Temperature control in birds Birds' feathers help them regulate their body temperature by acting as thermal insulators, protecting them from cold and allowing heat dissipation. They also provide waterproofing, preventing heat loss in aquatic environments and allow birds to adjust their body temp...

### Temperature control in birds Birds' feathers help them regulate their body temperature by acting as thermal insulators, protecting them from cold and allowing heat dissipation. They also provide waterproofing, preventing heat loss in aquatic environments and allow birds to adjust their body temperature by changing the position of their feathers. ### Skeletal differences between birds and humans The bird skeleton is light, with hollow bones and a large sternum with a keel for flight. The human skeleton is denser, designed to support weight. Birds have wings in place of arms, a skull with a beak without teeth, and a rigid spine for flight. Humans have arms with hands, a larger skull with teeth, and a flexible spine for an upright posture and movement on land.