I have 14 hens and 2 roosters that have grown up together since they were a day old. All seemed well until they started laying a couple weeks ago a handful have open sores on their back. I have cleaned them out and am keeping an eye on them...what should I do??? Can I assume that the roosters are to blame and is it time to build another coop for the roosters??? Will two roosters get along if kept alongside but seperate from the hens??? I have been reading through the posts and now I am thinking maybe lice/mites??? Any info would be helpful.