sweden crow cigarette Wild crows collect butts in for food rewards In Sweden, innovation took a

In Sweden, innovation took a wild turn literally , A startup called Corvid Cleaning began training crows to clean the streets by picking up cigarette butts the most common form of litter in the Crows trained to clean up cigarette butts on Swedish streets National Watch: Wild crows trained to clear cigarette butts from streets in Stockholm, Sweden Swedish Company Trains Crows to Pick Up Cigarette Butts Swedens Corvid Cleaning tested an ingenious vending machine that trained wild crows to clean up streets! , When crows dropped discarded cigarette butts into the device, it scanned the litter and

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