In Sweden, a startup named Corvid Cleaning launched a pilot program to train wild crows to pick up litter, specifically cigarette butts, in exchange for food. The birds drop the trash into a custom-designed machine that uses AI and cameras to identify the debris before dispensing a reward, such as seeds or peanuts. This initiative aimed to solve the massive problem of cigarette waste, which accounts for 62% of all litter in the country. The project gained attention for its potential to save citi