crows cigarette butts Swedish Company Trains to Clean Up A machine that trades food

A machine that trades food for litter : r Amazing Crows to help clean up cigarette butts in Sweden The Guardian Crows 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 wild birds carry Can Animals Be Trained to Become City Cleaners? Pop Up City No Butts About It: Crows Cleaning Up Cigarettes at a French Theme Park Urbanist A Swedish company has been training crows to pick up cigarette butts in an effort to reduce the cost of cleaning litter off the streets in Sdertlje, near Stockholm., Corvid Cleaning has developed a

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