crows cigarette butts 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, Crows trained to clean up

Crows trained to clean up cigarette butts in Sweden Reuters Six crows were trained to collect the butts thrown on the ground in France. Crows throw the cigarette butts they collect on the street into a machine and buy food from the machine as a reward. Crows trained to pick up cigarette butts in Sweden YouTube Swedish firm deploys crows to pick up cigarette butts Birds The Guardian CROWS Clean Up City Streets by Collecting Cigarette Butts Recycling Council of Alberta

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