crows cigarette butts These birds are being recruited to pick up discarded from the streets and squares of a Swedish city as part of a cost-cutting drive., The carry out the task as they receive some Swedish Company Trains Crows to

Swedish Company Trains Crows to Pick Up Cigarette Butts Crows trained to pick up cigarette butts in Sweden YouTube Wild crows trade cigarette butts for peanuts to keep Swedish streets clean National Post A project in Sweden is training crows to help clean the streets by collecting discarded cigarette butts. The system uses a machine that rewards the birds with food when they drop cigarette Trading Bird Food For Cigarette Butts Hackaday Ren Volpi (@renegvolpi): "Sweden once explored one of the strangest anti litter ideas: training crows to pick up cigarette butts. In Sdertlje, near Stockholm, a startup called Corvid Cleaning designed a machine that

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