What is the role of feathers ?

Explanation

**Step-by-Step Solution:**

1. **Definition of Feathers**: Feathers are epidermal growths that form a distinctive outer covering known as plumage, primarily found in birds.

2. **Role in Flight**: One of the primary roles of feathers is to create an airfoil shape for the wings. This shape is crucial for providing lift, which enables birds to fly.

3. **Thermoregulation**: Feathers also play a significant role in maintaining body temperature. They provide insulation, helping birds to stay warm in cold environments.

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