Whenever I see a story about how clever crows are, I'm reminded of that guy who gave the TED talk about crows collecting rubbish after sporting events and picking up coins in return for food. Turned out he made it all up.

There is also this story of training magpies to recycle bottle caps, which doesn't look fake: https://www.hackster.io/hfor62/training-wild-birds-to-trade-...