Identify a herbivorous bird among the following.

Options

A. Eagle
B. Sparrow
C. Peacock
D. Parrot

Explanation

### Step-by-Step Solution:

1. **Understand the Types of Birds**:
- Birds can be categorized based on their diet into three main groups: herbivores, omnivores, and carnivores.

2. **Define Herbivores**:
- Herbivores are animals that primarily eat plants. They do not consume meat.

3. **Review the Options**:
- The options given are:
A. Eagle
B. Sparrow
C. Peacock
D. Parrot

4. **Analyze Each Option**:
- **Eagle**: Eagles are carnivores, as they primarily eat meat (like fish and small animals).
- **Sparrow**: Sparrows are generally omnivores, as they eat seeds, fruits, and insects.
- **Peacock**: Peacocks are also omnivores; they eat plants, insects, and small animals.
- **Parrot**: Parrots are primarily herbivores, as they mainly eat fruits, seeds, and nuts.

5. **Identify the Herbivorous Bird**:
- From the analysis, the bird that fits the definition of a herbivore is the **Parrot** (Option D).

6. **Conclusion**:
- Therefore, the correct answer to the question is **D. Parrot**.