crow cigarette cleaning Clever Crows Are Now Picking Up Butts — And Quietly Saving Millions in Costs What if one of nature's

What if one of nature's smartest birds could help keep our streets cleaner? In Sweden, startup Corvid Cleaning tested an innovative machine that rewards crows with a small food treat whenever they 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, Swedens Corvid Cleaning tested an ingenious vending machine that trained wild crows to clean up streets! , When crows dropped discarded cigarette butts into the device, it scanned the litter and A Swedish startup called Corvid Cleaning has found a clever way to clean up city streets by teaming up with wild crows. Instead of paying human crews to pick up small pieces Wild crows trained to pick up cigarette butts in Swedish street cleaning project

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