crows collecting cigarettes In Sweden, Are Learning to Pick and Dispose of Cigarette Butts Properly Crows collect cigarette butts for

Crows collect cigarette butts for food in Sweden Crows take a cigarette break 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 In Sweden, a startup tested a smart but unusual idea: rewarding wild crows with food for picking up cigarette butts. The birds drop the waste into a special machine and receive a

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