Why do birds have feathers?
For grown-ups: the science
Birds have feathers to stay warm, fly, and sometimes hide or find other birds.
Feathers provide insulation by trapping air, and flight feathers form aerodynamic surfaces that generate lift, thrust, and control. Plumage color and pattern can support camouflage, recognition, and courtship, though these roles vary by species.
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Transcript
A robin fluffs its soft, bumpy coat. Why do birds have feathers?
Feathers trap little pockets of air close to a bird's body. The trapped air helps keep the bird warm.
Long, firm feathers on the wings push against the air. They help a bird lift, steer, and fly.
Some feathers have colors and patterns. They can help birds find each other or hide among leaves.
So feathers help birds stay warm, fly, and live safely in their homes.