"The Pecking Order - Examining the Social Hierarchy of Chickens and Other Fowl Creatures"
I picked this book up on a whim. It was a fascinating read - it revealed all the details of chicken social interaction. Apparently, chickens respect physical size - the larger chickens are highest up in the hierarchy and get the first pick of food and mates. The smaller defers to the largest. And chickens of the same size fight it out for dominance.
So, chickens respect size and aggression, and they're pretty good fighters. I wonder if this could ever come in handy?