sweden crows pick up cigarettes Butts for nuts: can do our dirty work (and should they)? In Sweden, Crows Are Learning

In Sweden, Crows Are Learning to Pick and Dispose of Cigarette Butts Properly The Swaddle Crows 'Paid' to Pick Up Cigarette Litter in Sweden Swedish startup Corvid Cleaning built a machine that dispenses food scraps when wild crows drop cigarette butts into a slot. Crows are entirely voluntary participants, drawn in by their problem solving ability researchers A Swedish startup called Corvid Cleaning has found a clever way to clean up city streets by teaming up with wild crows. Instead of paying human crews to pick up small pieces

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