crow cigarette cleaning Crows trained to clean up butts in Sweden Corvid Cleaning developed a machine

Corvid Cleaning developed a machine that encourages wild crows to collect litter. The birds drop cigarette butts into the slot and get food in return. No cages, no forced training the 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 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 Swedens Corvid Cleaning tested an ingenious vending machine that trained wild crows to clean up streets! , When crows dropped discarded cigarette butts into the device, it scanned the litter and

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