Crows trained to pick up litter butts in Sweden and other countries

Intelligent crows trained to keep streets clean by picking up cigarette butts

corvids / By /

SODERTALJE, NEAR STOCKHOLM, SWEDEN-NEWS AND COMMENT: Crows are being trained to pick up cigarette butts. The birds receive a food reward for every butt that they collect and deposit into a receptacle. …

Intelligent crows trained to keep streets clean by picking up cigarette butts Read More »