crows collecting cigarettes trained to clean up cigarette butts on Swedish streets Photo by Mind blowing facts

Photo by Mind blowing facts (@blowingfacts365) June 15, 2026 In Sweden, group of crows are trained picking up cigarette butts off the street, cutting clean up costs by up to 75%. In Sweden, a startup tested a smart but unusual idea: rewarding wild crows with food for picking up cigarette butts. The birds drop the waste into a special machine and receive a 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 Wild crows trained to pick up cigarette butts in Swedish street cleaning project

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