I'm new at this, but I did take a chicken class (sounds silly, but I'm a city girl, and had no clue) the woman at the class was a trained and very well respected judge at local shows, she showed us that if a roo gets to aggressive to catch him, grab his comb and pull his head down and keep doing it until he changes his mind about the hand that feeds him.. She showed us on a roo that was very miss behaved at class, and after about 5 tries he became a nice guy. I have a 6 wk old that has been miss behaving, so I have tried the advice and it seems to be working. But I would dress as if going to war, because they have the spurs and you don't want to get hit with that, but you do have to let him know you are boss and he can become stew... Good luck