sweden crows cigarettes Swedish Company Trains to Pick Up Cigarette Butts These birds are being recruited

These birds 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 crows carry out the task as they receive some Crows 'Paid' to Pick Up Cigarette Litter in Sweden A machine that trades food for litter : r Amazing Wild crows in sweden trained themselves to exchange cigarette butts for food, using machine deisgned YouTube Sweden Turns Crows Into City Cleaners by Rewarding Them With Food

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