Types of quill (flight) feathers are :

Options

A. Down feathers
B. Coverts
C. Filoplumes
D. Remiges

Answer

To answer the question about the types of quill (flight) feathers, we will analyze the provided options step by step.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are Down feathers, Coward feathers, Philopneum feathers, and Rammages.

2. **Evaluate Down Feathers**:
- Down feathers are soft and fluffy.
- Their primary function is to trap air and provide insulation to the bird, not for flight.
- **Conclusion**: Down feathers are not quill (flight) feathers.

3. **Evaluate Coward Feathers**:
- Coward feathers (likely a misspelling of "contour feathers") help streamline the bird's body and aid in smoothing airflow over the wings and tail.
- They do not serve as flight feathers.
- **Conclusion**: Coward feathers are not quill (flight) feathers.

4. **Evaluate Philopneum Feathers**:
- Philopneum feathers are associated with sensory functions and are connected to nerve endings.
- They provide information about feather placement and help with preening, but they are not used for flight.
- **Conclusion**: Philopneum feathers are not quill (flight) feathers.

5. **Evaluate Rammages**:
- Rammages (likely referring to "remiges") are the primary flight feathers found on the wings of birds.
- They are responsible for providing the lift and thrust needed for flight.
- **Conclusion**: Rammages are indeed quill (flight) feathers.

### Final Answer:
The types of quill (flight) feathers are **Rammages**.

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