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Fabulous Feathers

In Fabulous Feathers, evolutionary biologist Ben Garrod explores the feathers of birds and how they help them to fly. Learn how feathers are primarily made of keratin, a fibrous protein also found in human hair and nails. Feathers are lightweight yet strong and stiff, which allows birds to soar. Discover the unique structure of feathers, with parts such as the vane, barbs, and rachis working together to create the shape and function needed for flight. This video is excerpted from Secrets of Skin, a documentary series exploring the natural history of the body’s largest organ.

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Secrets of Skin
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1:53
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Q: What is keratin and why is it important in feathers?
A: Keratin is a fibrous protein found in hair, nails, and feathers. It makes feathers strong and flexible, allowing birds to fly and keep their bodies protected.

Q: How do the structure and qualities of feathers help birds fly?
A: Feathers are lightweight yet stiff and strong. The arrangement of parts like barbs and the rachis allows them to create a surface area that helps birds soar through the air with minimal effort.

Q: How are feathers different from hair, and why is it important that feathers have their unique structure?
A: While both feathers and hair are made of keratin, feathers are designed for specific functions like flight, insulation, and display. Their unique structure allows birds to fly, stay warm, and protect themselves in various environments.

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