sweden crows cigarettes Turns Into City Cleaners by Rewarding Them With Food The Guardian – Crows are

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 Crows trained to pick up cigarette butts in Sweden Swedish firm deploys crows to pick up cigarette butts Birds The Guardian 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 Crows 'Paid' to Pick Up Cigarette Litter in Sweden

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