Earlier today, I gave a couple of peanuts to a crow, and after it ate them, it approached me- tentatively, but it got much closer than crows usually do. So I gave it another peanut, after talking to the crow a bit (which seemed to soothe it).

It tried to bury the peanut next to a sapling by shoving it into soft ground, but it didn’t go in far enough, so the crow pulled the peanut out, grabbed a stick, deepened the hole, then put the peanut back in and buried it.

I watched a crow use tools. :D