crows cigarette butts Sweden uses to pick up Crows Trained to Pick Up

Crows Trained to Pick Up Cigarette Butts by Swedish Startup 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 Clever Crows Are Now Picking Up Cigarette Butts And Quietly Saving Millions in Cleaning Costs 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

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