Gizzard of birds is part of

Options

A. Oesophagus
B. Stomach
C. Small intestine
D. Large intestine

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the gizzard of birds and which organ it is a part of.

2. **Identifying Bird Anatomy**: In birds, the digestive system is specialized to handle their diet, which often consists of hard grains and seeds.

3. **Role of the Gizzard**: The gizzard is a muscular part of the digestive system that helps in grinding and breaking down food. Birds do not have teeth, so the gizzard plays a crucial role in mechanically processing food.

4. **Gizzard's Location**: The gizzard is located after the crop in the digestive tract. The crop is responsible for storing and softening food before it enters the gizzard.

5. **Conclusion**: The gizzard is part of the digestive system, specifically functioning as a part of the oesophagus, which is involved in the digestion process.

6. **Final Answer**: The gizzard of birds is part of the oesophagus.