I have additional info.
Charlie was not hand raised by us, my mom got him at a ranch (with various animals for sale) and he was a year old when we got him. That was back in October. My mom does admit that we should have gotten a younger cockerell but she felt sorry for Charlie because he was in moult. My mom felt that he was 'ugly' to the other chickens and that he would be shunned or something. That's how we got 3 of our barred rocks, because my mom thought they were 'ugly' to the other chickens and she felt sorry. One was missing quite a bit of feathers and was 'ugly' to us but she got pretty over a couple months.
Our other roosters were hand raised, except for my Melvy-Poo, and they aren't aggressive to people at all. Melvin isn't aggressive either just a flighty one. The 4 younger ones are about 6 - 7 months old and nothing like Charlie.
As for the ranch, I know that they start from brooder, to various sized cages depending on age and sex, or stays in a huge coop like thing for breeding. The ranchers really don't spend time with them. I even asked to look at the other chickens in the breeding coops and the lady kindly replied "We don't wanna disturb them in their natural habitat.". Natural habitat = shavings, roosts, nestboxes, and feeders. I remember when we were looking for a roo (before Charlie) we went into the cochin coop and it was like a normal coop except huge. Kinda warm too.
Anyways I remember that the cochins behaviour was much different from my chickens. When I walk outside they all come running to me either for treats or for me to give them love. The cochins there ran away from them and clucked like mad. They screamed when the lady picked them up. I could see it in their eyes...
If I had a ranch I would have a satisfaction guarentee poster about and I would keep the chickens clean.. Many of the chickens we got from there had bugs.
We don't buy our chickens from them anymore because they had bugs -_-