This reminds me of https://www.npr.org/templates/story/story.php?storyId=878780...
Although I seem to remember reading that the vending machine never worked as well as the inventor said.
Although I seem to remember reading that the vending machine never worked as well as the inventor said.
I know one of the people who worked alongside Klein (and Unidan) at Binghamton U. She says wild crows are highly neophobic and it's hard to train them to accept the presence of a big machine and do stuff with it. (Our conversation was quite a few years ago so I'm a bit vague.) There was a lot of academic disagreement and fallout when Klein went forward with his Ted talk and made the experiment out to be much more exciting than it was.