crow cigarette butts A Swedish start-up, Corvid Cleaning, is recruiting an unlikely workforce, wild crows, to combat urban pollution., The pilot project, launched in partnership with the Keep Sweden Tidy Foundation, Swedish Company Trains Crows to

Swedish Company Trains Crows to Clean Up Cigarette Butts EcoWatch In Sweden, a startup tested a machine that rewards crows with food every time they drop cigarette butts into it. The idea sounds unbelievable, but the goal was simple: turn one of Rumor that city in Sweden trained crows to pick up cigarette butts is for the birds 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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