The common bird pollinators in tropical America are

Options

A. Swallows
B. Robins
C. Swifts
D. Humming birds.

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the common bird pollinators in tropical America.

2. **Analyze the Options**: The options provided are swallows, robins, swifts, and hummingbirds.

3. **Evaluate Each Option**:
- **Swallows**: These birds are found worldwide and are larger in size. They do not primarily serve as pollinators, so they can be eliminated.
- **Robins**: Robins are primarily found in Europe, Africa, and parts of Asia. They are not known for their role in pollination in tropical America, so this option can also be eliminated.
- **Swifts**: Similar to swallows, swifts are larger birds and are not recognized as significant pollinators. They are more common in regions like Great Britain, making them an unsuitable choice for this question.
- **Hummingbirds**: These are small birds with long beaks that are specifically adapted to feed on nectar from flowers. They are known for their role in pollination, especially in tropical regions, including tropical America.

4. **Conclusion**: After evaluating all options, the correct answer is **hummingbirds**, as they are the common bird pollinators in tropical America.

**Final Answer**: Hummingbirds

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