Truthfully, you won't know until he begins mating the ladies and the hormones are raging, about 16-20 weeks. That's when the personality really emerges. Had a very friendly cockerel that my DH adored. The boy began little acts of aggression, but would still like to sit on DH's shoulder...later, he'd bite or flog. He was about 15 weeks old at the time he went bad. The one I finally chose was more standoffish, but now, as he has matured, he is a real gem. He is friendly now, but I don't try to baby him or pick him up. I give him his space and he follows me all over the place. The super friendly ones can be sizing you up and if you baby them alot, they may decide they can take you on. It's such an individual thing with roosters.
