crows cigarette butts Rumor that city in Sweden trained to pick up is for the birds René Volpi (@renegvolpi): "Sweden once

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 Butts for nuts: can crows do our dirty work (and should they)? Wild crows in sweden trained themselves to exchange cigarette butts for food, using machine deisgned YouTube A Swedish startup called Corvid Cleaning has found a clever way to fight litter using wild crows. According to The Guardian, the company developed a device that rewards crows with food when Swedish Crows Help Clean Up the Environment

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