sweden crows cigarettes A machine that trades food for litter : r/Amazing Wild crows trade cigarette butts

Wild crows trade cigarette butts for peanuts to keep Swedish streets clean National Post Cigarette butts make up more than 60 percent of all street litter in Sweden, and cities spend millions of kronor every year cleaning them up. One Swedish startup looked at that problem Wild crows collect cigarette butts in Sweden for food rewards The Guardian Crows are being recruited to pick up discarded cigarette butts from the streets and squares of a Swedish city as part of a cost cutting drive. The wild birds carry 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 Anneka Wild crows are helping clean up cigarette litter in Sweden A Swedish startup called Corvid Cleaning, based in Sdertlje near Stockholm, has launched a pilot project that uses wild corvidsmainly

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