We "inherited" our chickens by buying a foreclosed and abandoned home... there were 5 chickens roaming around, three hens and two roosters. We started feeding them, and have learned to enjoy them. They are still very much free range, though. About three months ago, the roosters got in a huge brawl, and our dominant rooster killed the subordinate one. He knew he had him on the ropes (the other bird had given up), but he deliberately killed him. Fairly upsetting to watch, by the way, but nothing I did, from brooms to water from the hose seemed to matter. We have had 4 clutches of babies since we've lived here, and I have now found two adolescent roosters killed on our property... not by a predator, they were not eaten. This last time the young one must have put up a fight, because several of our adult rooster's feathers were about, including his very long tail feathers. It was obviously him. So.. is this normal? Our babies are all less than 4 months old. The pet store won't take them so young. I have considered giving away our adult rooster, but if this is common behavior, will the adolescents kill each other, too?