i remember a similar project that used crows to pick up cigarette butts, don't know what happened of it though https://www.theguardian.com/environment/2022/feb

i remember a similar project that used crows to pick up cigarette butts, don't know what happened of it though https://www.theguardian.com/environment/2022/feb/01/swedish-crows-pick-up-cigarette-butts-litter https://www.theguardian.com/environment/2022/feb/01/swedish-...