sweden crow cigarette Crows trained to clean up butts in Wild crows trained to pick

Wild crows trained to pick up cigarette butts in Swedish street cleaning project In Sweden, a surprising idea is turning crows into allies in keeping cities clean. Instead of hiring crews to pick up cigarette butts, one of the most common types of litter, a 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 Crows Trained to Pick Up Cigarette Butts by Swedish Startup In Sweden, Crows Are Learning to Pick and Dispose of Cigarette Butts Properly The Swaddle Crows 'Paid' to Pick Up Cigarette Litter in Sweden

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