If we observe birds, we find the most of the birds often move their neck. It is because

Options

A. in most of the birds, the eyes are fixed and cannot move
B. their ears are covered and they can fly
C. the birds have two eyes
D. heir eyes can focus on two different objects at a time

Answer

**Step-by-Step Solution:**

1. **Observation of Bird Behavior**: Begin by observing that many birds frequently move their necks. This is a common behavior that can be noted in various species of birds.

2. **Understanding Eye Structure**: Recognize that the eyes of most birds are fixed in their sockets. Unlike humans, birds do not have the ability to move their eyes around to look in different directions.

3. **Need for Neck Movement**: Since birds cannot move their eyes, they must turn their heads (or necks) to change their field of vision. This allows them to look around and be aware of their surroundings, which is crucial for spotting predators or prey.

4. **Evaluating Other Options**: Consider the other statements provided in the question:
- The statement about ears being covered is not relevant to the movement of the neck.
- The fact that birds have two eyes is true but does not explain the neck movement.
- The ability to focus on two different objects at a time is not applicable to the neck movement either.

5. **Conclusion**: Based on the information, the most accurate reason for why birds often move their necks is that their eyes are fixed and cannot move. Therefore, they need to turn their necks to see in different directions.

**Final Answer**: Birds often move their necks because their eyes are fixed and cannot move.

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