crows collecting cigarettes A project in Sweden is training to help clean the streets by discarded cigarette butts. The system uses a machine that rewards the birds with food when they drop cigarette Butts for nuts: can crows

Butts for nuts: can crows do our dirty work (and should they)? Crows trained to clean up cigarette butts on Swedish streets National Watch: Crows trained to collect cigarette butts in French theme park 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

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