sweden crows pick up cigarettes In Sweden, a surprising idea is turning into allies in keeping cities clean. Instead of hiring crews to cigarette butts, one of the most common types of litter, a Sweden uses crows to pick

Sweden uses crows to pick up cigarette butts In Sweden, Crows Are Learning to Pick and Dispose of Cigarette Butts Properly The Swaddle In a city near Stockholm, wild crows are being trained to become street cleaners and it's turning heads around the world. A Swedish startup called Corvid Cleaning built a machine that Watch: Wild crows trained to clear cigarette butts from streets in Stockholm, Sweden

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