Researchers trained bumblebees (Bombus terrestris) to move a ball in order to access a sugar solution as a reward. Other bees learned from experienced bumblebees and the bees choosed the ball positioned closest to the center. Credit: Bumblebees show cognitive flexibility by improving on an observed complex behavior Olli J. Loukola, Clint J. Perry, Louie Coscos, Lars Chittka Science DOI:
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