Did You Know

• The feathers of penguin chicks aren't weatherproof, but those of the adults are.

• Macaroni penguins got their name because of the feathers on their head, which make them look like the well-dressed men of eighteenth-century London who were the focus of the song "Yankee Doodle Dandy."

• Since their nests aren't very protective, female penguins eat more clams and mussels during the breeding season to elevate their calcium levels. This extra calcium makes their eggshells thicker.

• Penguins can swim at speeds of up to 15 miles per hour (24 kilometers per hour)!

• A penguin has more than seventy feathers per square inch (6.5 square centimeters) of skin.

Breeding colonies are usually near the shore, though some species move as far as 2 miles (3 kilometers) inland. Some breeding habitats are in snow, while others are on tropical islands.

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