I have 5 roos, 4 of whom I keep in the same coop and pen. One is 1 1/2 yrs. old, one 10 mos. old, one 8 mos. old and one 6 mos. old. The oldest has always been king of the barnyard-----chasing the others, pecking them, and some minor skirmishes with no noticeable bloodshed. Today, something changed. My 10 mos. old was chasing the 1 1/2 yr. old around the community pen (100' X 100') and then chased him into the barn. By the time I got there, the older roo was cowering in a small doghouse, with the younger practically sitting on top of him, pecking away (this time there was blood drawn). I'm hoping that once the younger roo is acknowledged as the alpha, this behavior will go away, and things will settle down. (I also noticed a he n who had a bloodied comb-----I suspect the 10 mos. old roo also did that.) I don't have a way to separate the agressor right now, other than perhaps keeping him locked up in a dog crate, or rabbit cage inside the coop-----but I really don't want to do that. I also don't want to find a dead rooster one of these mornings--------what suggestions or experiences do others have? Is this normal behavior that will pass once the pecking order is re-established? By the way, my kids hate the older roo, as he tends to "attack" them or Hubby if they enter the pen or coop. My 16-yr. old son and I dealt with it by giving him a slight kick whenever he attempted anything, and he has been behaving with us. I sort of feel bad for him losing his position---he's very good with the hens, but so are the other roos (except maybe for the one that was bloodied today).