sweden crows pick up cigarettes Wild collect cigarette butts in for food rewards A machine that trades food

A machine that trades food for litter : r Amazing A Swedish company has been training crows to pick up cigarette butts in an effort to reduce the cost of cleaning litter off the streets in Sdertlje, near Stockholm. Corvid Cleaning has Swedish Startup Trains Crow to Pick Up Litter in Exchange for Food This Swedish Company is Training Crows to Pick Cigarette Butts From Streets Buzz News News18 A Swedish start up, Corvid Cleaning, is recruiting an unlikely workforce, wild crows, to combat urban pollution., The pilot project, launched in partnership with the Keep Sweden Tidy Foundation,

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