france crows cigarettes Six were trained to collect the butts thrown on the ground in France. Crows throw the cigarette butts they collect on the street into a machine and buy food from the machine as a reward Intelligent' crows to pick up

Intelligent' crows to pick up litter at French theme park French theme park trains crows to pick up trash Crows trained to pick up cigarette butts, garbage at French park In France, some crows have been trained to pick up cigarette butts on the street. The crows pick up cigarette butts and put them into a machine, where they receive food as a reward. Crows Trained to Pick Up Cigarette Butts by Swedish Startup No, crows aren't cleaning up cigarette butts in Sweden Popular Science

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