"You might think your chickens might see you as dogs do, as a god who strides among them tossing manna. You would be mistaken: chickens don’t think you are the same person who wore that different shirt yesterday. Chickens don’t think that your moving parts are part of a single life-form. Let’s be honest, chickens don’t think. What I’m getting at here is: don’t walk into a chicken run barefoot, or the birds will see your toes and give you what we in the business call 'the full Hitchcock.'"
... and go read the rest here.