crows collecting cigarettes Good birdie! This box trains to collect cigarette butts for cleaner cities A pilot program in Sweden

A pilot program in Sweden trained wild crows to drop cigarette butts into a machine in exchange for food. Run by startup Corvid Cleaning, it aimed to cut litter clean up costs by Wild crows trained to pick up cigarette butts in Swedish street cleaning project A Swedish startup, Corvid Cleaning, is tackling litter by training wild crows to collect cigarette butts in exchange for food : r interesting Clever Crows Are Now Picking Up Cigarette Butts And Quietly Saving Millions in Cleaning Costs Cool idea, but is it possible? : r crows Sweden deploys 'easy to teach' CROWS to pick up cigarette butts on city streets Daily Mail Online

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