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Birds

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Crow with tool

Clever crows

After using tools, the birds behave more optimistically, study suggests

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Griffin the parrot

Discerning bird

Researchers’ African grey parrot puts (young) humans to shame in volume-focused tests

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It’s been 75 million years since birds lost their teeth, to this day mutant chickens will grow teeth — teeth that bear a close resemblance to their ancient and remarkably close relative, the alligator, Arkhat Abzhanov, associate professor of organismic and evolutionary biology, told his Harvard Museum of Natural History audience.

Before takeoff

Lecture on dinosaur-bird connection is first in five-part ‘Evolution Matters’ series

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