crows picking up cigarettes Butts for nuts: can do our dirty work (and should they)? Sweden trains crows to pick

Sweden trains crows to pick up butts Travel Blog TravelGumbo Good birdie! This box trains crows to collect cigarette butts for cleaner cities Digital Trends In Sweden, a startup tested a smart but unusual idea: rewarding wild crows with food for picking up cigarette butts. The birds drop the waste into a special machine and receive a Crows take a cigarette break A Swedish startup, Corvid Cleaning, is tackling litter by training wild crows to collect cigarette butts in exchange for food : r interesting Crows pick up cigarette butts: Dutch startup training birds to pick up litter for food TomoNews

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