sweden crow cigarette Crows trained to clean up butts on Swedish streets In Sweden, a startup called

In Sweden, a startup called Corvid Cleaning tested a pilot machine designed to train crows to collect cigarette butts and exchange them for small food rewards. Corvids: the bird family that includes Butts for nuts: can crows do our dirty work (and should they)? In a city near Stockholm, wild crows are being trained to become street cleaners and it's turning heads around the world. A Swedish startup called Corvid Cleaning built a machine that Crows 'Paid' to Pick Up Cigarette Litter in Sweden

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