How bird feeders may be changing great tits' beaks

Longer beaks may be evolving in U.K. great tits because of the widespread use of bird feeders in the country.

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Outdoors column: At the bird feeder, it's all about survival during the winter – Chicago Tribune

Mariah Quintanilla, Author at Science News

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Backyard bird feeders prompting beak evolution

How bird feeders may be changing great tits' beaks

How bird feeders may be changing great tits' beaks

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