Space Daily August 22, 2026 • 13:00

Researchers in Japan documented carrion crows placing walnuts in front of cars stopped at traffic lights, then letting the vehicles crack the shells before retrieving the food — behaviour recorded repeatedly over 21 months. - Space Daily

These Japanese crows have turned traffic lights into a reliable tool—and researchers spent two decades watching them perfect the strategy.

A road junction in Sendai, Japan, in the early 1990s. The light turns red, a line of cars stops, and a crow drops onto the road just ahead of a front tire. It sets down a walnut, then flies back to t… [+4931 chars]

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Researchers in Japan documented carrion crows placing walnuts in front of cars stopped at traffic lights, then letting the vehicles crack the shells before retrieving the food — behaviour recorded repeatedly over 21 months. - Space Daily

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