Earlier quoted context omitted.
Your comment reminded me of another article about crows. It sounds like gifting is a known phenomenon but isn't that well established or researched. https://www.audubon.org/news/did-crows-actually-make-these-g...
Is there a possibility of human-crow co-evolution? I really can't think of any other reason the crow would give gifts.
If crows are social and they have their own theory of mind it’s not a huge leap to suspect they’d make friends or try and give friends what they think are valuable gifts and that wouldn’t need to be limited to just other crows.