Which are the largest birds of the New World?

Options

A. The common Rheas
B. The Emu
C. The giant crane
D. The ostrich

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the largest birds of the New World.

2. **Understand Bird Classification**: Birds belong to the phylum Chordata and the class Aves. This classification is essential for understanding the characteristics of birds.

3. **Distinguish Between Flying and Flightless Birds**: Birds can be categorized into two groups: flying birds and flightless birds. This distinction is based on their anatomical features, particularly the presence of pneumatic bones, which are hollow bones that aid in flight.

4. **Identify Examples of Flightless Birds**: One of the most notable examples of a flightless bird is the ostrich.

5. **Determine the Size of the Ostrich**: The ostrich is recognized as the largest and heaviest bird. Female ostriches can grow up to 6 feet tall and weigh over 200 pounds, while male ostriches can reach heights of up to 9 feet and weigh around 280 pounds.

6. **Conclude the Answer**: Based on the information, the largest bird of the New World is the ostrich.

**Final Answer**: The largest birds of the New World are the ostriches.

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