crows cigarette butts Swedish Company Trains to Pick Up Can Animals Be Trained to

Can Animals Be Trained to Become City Cleaners? Pop Up City Crows trained to clean up cigarette butts in Sweden Reuters Trading Bird Food For Cigarette Butts Hackaday The Guardian Crows are being recruited to pick up discarded cigarette butts from the streets and squares of a Swedish city as part of a cost cutting drive. The wild birds carry 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.

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