Oh yeah! I forgot about this. It works like a charm!Just a thought I had a roo who was very eager and aggressive. I introduced him to the Queen (Brady) She taught him some manners QUICK! he never approached another Lady like that again. Sometimes the older ladies in the flock will straighten out a young roo in ways a human never could. So if you want to try to keep him separate him for now let him see but not touch the other birds when he gets big enough introduce him to your flock. See if he can learn some manners from the wiser ladies.
We used to have this Rhode Island Red bantam cockerel that was as sweet as can be. Once we gave him a couple pullets for company, he became extremely aggressive toward them... not mating... beating up! We took that little cockerel and put him in with his mother! She taught him some lessons in a hurry! It was the funniest thing! She chased him all over that coop and run and every time she caught him she pulled out a couple of feathers and then he got away again. This continued for a good ten minutes when my son felt sorry for him and took him back to his own coop upon which he immediately set in after the pullets again. I told him he needed to leave him with his mother for a couple of days. He felt sorry for him but didn't take him back out for a couple more days even though every time he came close to that pen, the little cockerel tried and tried to get to him so he could get out.
After a couple of days he took him back to his own coop again and he never ever attacked his pullets again! He turned out to be a good little guy after all that!