Crows share an interesting set of behaviors with humans: they like to play, and they often use tools. Scientists investigate why crows are so playful, and found that the birds who played with tools in an experiment were much better at using those tools in a food-finding task.

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Crows share an interesting set of behaviors with humans: they like to play, and they often use tools. Scientists investigate why crows are so playful, and found that the birds who played with tools in an experiment were much better at using those tools in a food-finding task.