sweden crow cigarette A machine that trades food for litter : r/Amazing Wild crows collect cigarette butts

Wild crows collect cigarette butts in Sweden for food rewards 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 Crows trained to pick up cigarette butts in Sweden YouTube 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

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