How Much Do You Know About Feathers? Test Your Knowledge

Which weighs more?

a) A bird’s skeleton
b) A bird’s plumage
c) A bird’s teeth

Answer: b. A bird’s feathers weigh more than its skeleton—usually. Most bird bones are hollow and therefore lightweight, which facilitates flight. The skeleton of a small songbird accounts for only about 5 percent of its weight. And birds don’t have teeth!

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