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 CROWS Clean Up City Streets by Collecting Cigarette Butts Recycling Council of Alberta Crows trained to clean up cigarette butts on Swedish streets National Corvid Cleaning developed a machine that encourages wild crows to collect litter. The birds drop cigarette butts into the slot and get food in return. No cages, no forced training the In Sweden, Crows Are Learning to Pick and Dispose of Cigarette Butts Properly The Swaddle Crows pick up cigarette butts: Dutch startup training birds to pick up litter for food TomoNews

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