How frequently have you thought about birds’ beaks lately? Unless you’re an ornithologist, probably not often. Then again, if you are thinking about birds consume their food, you might wonder, do ...

Teeth are one of nature’s most useful tools, helping animals bite, tear, and grind their food. Mammals, reptiles, and even some amphibians rely on them daily, but birds are the exception. Modern birds ...

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Flying is really hard work. Compared to walking, swimming, or running, flying is the form of movement that takes the most energy and requires the most calories. That means that birds have had to ...