crows cigarette butts Sweden uses to pick up Wild crows in sweden trained

Wild crows in sweden trained themselves to exchange cigarette butts for food, using machine deisgned YouTube A Swedish company has been training crows to pick up cigarette butts in an effort to reduce the cost of cleaning litter off the streets in Sdertlje, near Stockholm., Corvid Cleaning has developed a How Wild Crows in Sweden Are Helping Clean Up Thousands of Cigarette Butts NEWS Crowbars: Vending Machines Reward Crows for Cleaning Up Cigarette Butts Urbanist 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

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