When I was a younger man I raised alot of chickens,Grizzlies,cornish cross, and a few more breeds, I just wanted to mention canabalism, and excessive pecking of each other, I cured this two ways, first I put a red film on the windows so the blood wouldnt attract them to peck more,second and most important I went to the deep litter feeding method, and got rid of my feeders, basicially what you are doing is putting an initial layer of straw, hay, or whatever on the floor, and just scatter their feed over it, now they are kept busy enough scratching for food to have time to peck each other, keep this mix just a little damp to keep the dust down and avoid lung problems, Good luck with your chickens...................................steg