Drawin finches differ with each other on the basis of :

Options

A. Feather
B. Beak
C. Colour of eye
D. Body colour

Answer

**Step-by-Step Solution:**

1. **Introduction to Darwin Finches**: Darwin finches are a group of 15 different species of passerine birds that were observed by Charles Darwin during his journey to the Galapagos Islands.

2. **Observation of Differences**: These finches exhibit physical differences that are adaptations to their specific environments and food sources.

3. **Key Difference**: The primary difference among the Darwin finches is in their beak size and shape. This variation is a result of their different feeding habits and the types of food they consume.

4. **Conclusion**: Therefore, the correct answer to the question is that Darwin finches differ from each other on the basis of their beak.

**Final Answer**: Beak

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