crows collecting cigarettes Sweden uses to pick up cigarette butts Unbox - Sweden has begun

Unbox Sweden has begun training wild crows to collect litter especially cigarette butts in exchange for food rewards. A special machine recognizes when a crow drops a piece of Butts for nuts: can crows do our dirty work (and should they)? A project in Sweden is training crows to help clean the streets by collecting discarded cigarette butts. The system uses a machine that rewards the birds with food when they drop cigarette Watch: Crows trained to collect cigarette butts in French theme park

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