crow cigarette butts Swedish Company Trains Crows to Clean Up Crows trained to pick up

Crows trained to pick up cigarette butts in Sweden YouTube Did You Know? In Sweden, clever crows learned to exchange discarded butts for food. In 2022, a startup called Corvid Cleaning tested the unusual idea in Sdertlje, a city near Stockholm. In Sweden, a startup tested a machine that rewards crows with food every time they drop cigarette butts into it. The idea sounds unbelievable, but the goal was simple: turn one of Cigarette butts make up more than 60 percent of all street litter in Sweden, and cities spend millions of kronor every year cleaning them up. One Swedish startup looked at that problem CROWS Clean Up City Streets by Collecting Cigarette Butts Recycling Council of Alberta

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