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by oh_sigh 2038 days ago
Yeah, I've seen multiple instances of people claiming to have done this, but they always turn out to be scams. I believe a crow could he easily trained to move a bottle cap already on a table to the reward mechanism, but so far no one has ever shown birds coming with wild caught bottle caps to get more food.
1 comments

There's a video showing just that in his channel: https://www.youtube.com/channel/UCtkv3wuEP-Veur4iYJWkBgA/vid...