Yes, very much so. Feathers come in three general varieties: 1. Flight feathers, 2. Plumage or ornamental feathers, 3. DownThe feathers underneath the flight feathers keep the bird warm.
They act like insulation just as any form of fur or covering does on animals (or like clothing for humans). Heat radiating out from the body hits the feathers and some of it is reflected back. Some...
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