Read the passage and answer the question.

The ostrich is the largest bird in the world, but it cannot fly. Its legs are so strong and long that it can travel faster by running. Ostriches use their wings to help them gather speed when they start to run. They also use them as brakes when they are turning and stopping.

Ostriches have been known to run at a rate of 96 km an hour. This is faster than horses can run, and as fast as most people drive a car. These huge birds stand as tall as a horse and sometimes weigh as much as 135 kg. In Africa, their home continent, they are often seen with large animals. The zebra, which is also a fast runner, seems to be one of their favorite companions.

Each ostrich egg weighs as much as two dozen chicken eggs. Ostrich eggs are delicious to eat and are often used as food in Africa. The shells also are made into cups and ornaments.

What is the author’s opinion of the ostrich?