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Crafty crows know what it takes to make a good tool

(University of St. Andrews) Biologists at the University of St Andrews have discovered how New Caledonian crows make one of their most sophisticated tool designs -- sticks with a neatly shaped hooked tip. New Caledonian crows are the only species besides humans known to manufacture hooked tools in the wild. The study, published in Current Biology today, reveals how crows manage to fashion particularly efficient tools, with well-defined 'deep' hooks.
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Biologists at the University of St Andrews have discovered how New Caledonian crows make one of their most sophisticated tool designs - sticks with a neatly-shaped hooked tip.

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