Owl is

Options

A. Diurnal bird
B. Vespertine bird
C. Crepuscular bird
D. Nocturnal bird

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks to identify the classification of the owl based on its activity pattern during the day or night.

2. **Analyzing the Options**:
- **Diurnal Bird**: Diurnal birds are active during the daytime. Examples include hummingbirds, woodpeckers, and cuckoos. Since owls are not active during the day, this option is incorrect.

- **Vespertine Bird**: Vespertine birds are those that are active during the evening or at dusk. An example of a vespertine bird is a bat. Since owls are not primarily active during the evening, this option is also incorrect.

- **Crepuscular Bird**: Crepuscular birds are active during twilight, which is the time just before sunset and just after sunrise. An example is the nighthawk. Owls do not primarily hunt during twilight, making this option incorrect as well.

- **Nocturnal Bird**: Nocturnal birds are active during the night. Owls are well-known for their night-time hunting and activity. Therefore, this option is correct.

3. **Conclusion**: Based on the analysis of the options, the correct classification of the owl is that it is a **nocturnal bird**.

---