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Sep. 17, 2010
Crows Use Tools To Capture A Fatty Snack
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New Caledonian crows are among only a handful of species on the planet that have been shown to use tools. They use twigs to fish out beetle larvae from dead trees. Reporting in Science, Christian Rutz and colleagues explore why the birds evolved to have this rare trait.
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Brilliant Blunders
by Mario Livio
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