crows picking up cigarettes Clean City Streets by Collecting Cigarette Butts A Swedish startup, Corvid Cleaning,

A Swedish startup, Corvid Cleaning, is tackling litter by training wild crows to collect cigarette butts in exchange for food : r interesting Trained crows keep a French Theme Park litter free CGTN Crows trained to clean up cigarette butts on Swedish streets National Crows trained to pick up cigarette ends and rubbish at French park Headlines, features, photo and videos from china news chinanews ecns cns Crows trained to pick up cigarette butts in Sweden video Birds The Guardian

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