Comment by observationist

They plan pretty deeply - if you think about things like plastic lid snowboarding, or cup sorting games (fit the smaller cups inside the larger) and those types of puzzles, there's usually an abstract reward, whether it's fun, play, revenge, or some future food or whatnot. They tease other animals, will play fetch, demonstrate a rich emotional inner life, and all of those things can be motivations for their complex plans. Throw in familial loyalty, social dynamics, interactions with humans, and it's a recipe for glorious chaos. There's a lot more going on that doesn't cleanly map to most people's conception of birds.

Ravens are wonderful creatures.