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Crows trained to clean up cigarette butts on Swedish streets National In Sweden, Crows Are Learning to Pick and Dispose of Cigarette Butts Properly The Swaddle Clever Crows Are Now Picking Up Cigarette Butts And Quietly Saving Millions in Cleaning Costs In Sweden, an innovative project has demonstrated how intelligent birds can help tackle urban litter. Researchers and a startup called Corvid Cleaning trained wild crows to collect cigarette butts from the streets This Swedish Company is Training Crows to Pick Cigarette Butts From Streets Buzz News News18 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

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