A couple of years ago we were holidaying in Kent, UK, and went for a walk on the South Downs. There was a guy in a hide shooting crows. He was at the edge of a field and had put some sort of lure in the middle of the field. Crows would fly down and he would shoot them. There were thirty or so dead birds grouped around the lure, but the crows continued to fly down, and continued to get shot. This makes me think that crow intelligence is as it were not general.
We need to put signs next to cliffs to remind people not to fall to their deaths while taking photos of themselves. Let's not pretend humans aren't incredibly stupid animals at times as well.
