Wild crows in sweden trained themselves to exchange cigarette butts for food, using machine deisgned Channel: Alien Invasion Facts293 views • 01/01/2026Related VideosCrows trained to clean up cigarette butts in SwedenIn Sweden They Train Birds to Remove Cigarette Butts!Sweden deploys crows to pick up cigarette butts on city streetsCleaning Up Cigarette Butts in Green Bay
