Chickens are way too smart to be understood by us mortals. They do lots of things better than humans but they are most accomplished in acting stupid around people. I genuinely believe mine think I'm trying to do the same thing around them because they tend to really over exaggerate. So much distrust among us, can't take it anymore.
Why are chickens considered dumb?

As someone who had chickens, I would say they're dumber than a sack of potatoes, but I don't want to insult the sack of potatoes.
Chickens are dumb because they're very eggheaded and never study for eggsams.