LOL. I had three blrw roos that grew up together, then I seperated them and put the best one in with the hens and the others in the main pen. So when I thought I was having fertility issues, I decided to "add" one back in with the hens and other roo. LOL yeah right. The second the "new rooster hit the floor, the old one was all over him. A week ago they were best buddies, and now they were in a fight to the death. The first rooster got used to having his hens all to himself, and he wasn't wanting to share with his brother LOL. Within 45 seconds, the first rooster had the intruder pinned to the ground, viciously pecking him. The 2nd rooster is now back in the main pen, where he will stay.