Amazing to sit and watch. I noticed a couple of my buff orpingtons every once in a while will get a running start at each other and butt their chests together. They do it a couple of times then they both run off and do something else. Then some of the chicks keep digging holes in the shavings. I fill in the hole they work at it and dig it right back out. Same spot every time too. I did leave the hole where they all seem to sleep. The other funny thing is they sleep together and it seems like once in awhile one doesn't like being on the other ring of the circle so it runs across the other chicks waking everyone up. I am starting to realize I have way too much time on my hands.