sweden crow cigarette A project in is training crows to help clean the streets by collecting discarded butts. The system uses a machine that rewards the birds with food when they drop cigarette Watch: Wild crows trained to

Watch: Wild crows trained to clear cigarette butts from streets in Stockholm, Sweden 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 A Swedish startup tested smart machines that reward crows with food for collecting cigarette butts. The project, developed by Corvid Cleaning, focused on a small pilot in Sdertlje near Stockholm. The machines Crows trained to pick up cigarette butts in Sweden YouTube In Sweden, an innovative project has demonstrated how intelligent birds can help tackle urban litter. Researchers and a startup called Corvid Cleaning trained wild crows to collect cigarette butts from the streets

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