sweden crow cigarette Crows trained to clean up butts in In Sweden, a startup called

In Sweden, a startup called Corvid Cleaning tested a pilot machine designed to train crows to collect cigarette butts and exchange them for small food rewards. Corvids: the bird family that includes Sweden uses crows to pick up cigarette butts Sweden deploys 'easy to teach' CROWS to pick up cigarette butts on city streets Daily Mail Online When Birds Help Clean The City In Sweden, researchers and innovators have experimented with training wild crows to collect discarded cigarette butts in exchange for food rewards. using simple learning mechanisms, the

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