The male and female of which of the following birds resemble each other?

Question

Accepted Answer

The correct answer is **3. Sparrow**.

### Explanation:

In the case of sparrows, both male and female birds exhibit very similar plumage, which is a characteristic that helps them blend into their environment. This similarity is particularly advantageous for nesting and raising young, as it reduces the risk of predation.

#### Analysis of Options:

1. **Bulbul**: In bulbuls, males and females can often be distinguished by their coloration and features. Males may have more vibrant colors or distinct markings compared to females.

2. **Cuckoo**: Cuckoos also show sexual dimorphism, where males and females have different appearances. For example, in some species, males are more brightly colored than females.

3. **Sparrow**: As mentioned, both male and female sparrows look quite alike, with similar brown and gray plumage that helps them camouflage in their natural habitat.

4. **Hummingbird**: Hummingbirds typically exhibit sexual dimorphism, with males often having brighter and more iridescent feathers compared to females, making them easily distinguishable.

### Conclusion:

Thus, the sparrow is the only option where the male and female birds resemble each other closely, making option 3 the correct answer.