crows collecting cigarettes Watch: trained to collect cigarette butts in French theme park Wild crows trained to pick

Wild crows trained to pick up cigarette butts in Swedish street cleaning project Sweden uses crows to pick up cigarette butts Unbox Sweden has begun training wild crows to collect litter especially cigarette butts in exchange for food rewards. A special machine recognizes when a crow drops a piece of 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 developed a

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