Mockingbirds can imitate any sound from a squeaking door to a cat meowing.

An ostrich’s eye is bigger than its brain.

An ostrich can run at speeds up to 45 miles per  hour.

A bird’s eye takes up about 50 percent of its head; our eyes take up about 5 percent of our head. To be comparable to a bird’s eyes, our eyes would have to be the size of baseballs.

The penguin is the only bird that can swim, but not fly. It is also the only bird that walks upright.

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