sweden crows pick up cigarettes Wild trained to cigarette butts in Swedish street cleaning project A Swedish company called Corvid
A Swedish company called Corvid Cleaning is training wild crows in the city of Sdertlje to collect cigarette butts in exchange for food rewards. The project uses a specially designed machine that Sweden uses crows to pick up cigarette butts Crows 'Paid' to Pick Up Cigarette Litter in Sweden Crows Trained to Pick Up Litter in Swedish Experiment Jason Hood posted on the topic LinkedIn
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