I recall some time back something like this article was posted in HN and I conveyed a story about the time some crows were screeching like crazy in a tree outside my bedroom window waking me up early. I was so pissed I went outside and got some rocks to throw at them. But then I noticed there was a badger (or some cat like creature, it was early, and I was groggy) and it was climbing up the tree to try to get to the crow's babies.

I guess my inner mommy kicked in and I threw the rocks at the badger, and it fell out of the tree and ran off and the crows quieted down. It seemed to me like they were bowing or nodding their heads to me after I did that.

After that, whenever I went outside, I wave at my little neighbors. I posted that and someone on HN said it was a good thing I made that decision otherwise the crows would have hated me and might chase me outside. I thought that was a little kooky when I first read that, to be honest. But after seeing a lot of other article posts like this one, and the experience I had, I think there is something to this idea that crows are smarter than, well... smarter than I had previous considered.