I remembered reading that to show a roo who is the dominant one, you should tuck them under your arm with their head facing backwards and walk around that way with them for a short time. I've used that and it seems to have worked. I only have one small Silkie roo now but I had a Barred Rock roo and I have not had a problem with either one of them. The silkie, although he is small, he is very protective of his silkie girl and will try to take a peck at my hand when I try to pick her up. I used the method above and he really thinks about it now. I always make sure I hold them alot so they know that I WILL pick them up when I want to whether they like it or not. I often hold them and give them treats. So far, so good. I have only had chickens for less than a year now but with the help you get on BYC forums, you can learn so much so quickly!