sweden crows pick up cigarettes Swedish startup Corvid Cleaning built a machine that dispenses food scraps when wild drop cigarette butts into a slot. Crows are entirely voluntary participants, drawn in by their problem-solving ability researchers Swedish firm deploys crows to

Swedish firm deploys crows to pick up cigarette butts Birds The Guardian In Sweden, a surprising idea is turning crows into allies in keeping cities clean. Instead of hiring crews to pick up cigarette butts, one of the most common types of litter, a Crows 'Paid' to Pick Up Cigarette Litter in Sweden Clever Crows Are Now Picking Up Cigarette Butts And Quietly Saving Millions in Cleaning Costs

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