crows picking up cigarettes No Butts About It: Cleaning at a French Theme Park Rook at this mess: French

Rook at this mess: French park trains crows to pick up litter France The Guardian Unbox Sweden has begun training wild crows to collect litter especially cigarette butts in exchange for food rewards. A special machine recognizes when a crow drops a piece of In Sweden, Crows Are Learning to Pick and Dispose of Cigarette Butts Properly The Swaddle These birds are being recruited to pick up discarded cigarette butts from the streets and squares of a Swedish city as part of a cost cutting drive., The crows carry out the task as they receive some Latest Attraction at French Theme Park: Crows That Pick Up Trash The New York Times 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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