As it turns out I have 4 roosters and only one pullet They are about 13 weeks old now and are all out in a coop with an L-shaped run that is 12' x 6' with an additional 6' x 6' on the opposite end of the coop. All of them started out VERY friendly, 2 roosters are rhode island reds and 2 are bantams. The bantams are still very affectionate and pretty laid back. The smaller RIR is a little skittish but will still let us hold him and isn't showing any signs of aggression....now the bigger RIR is a BULLY! I see him picking on everyone else all day long. I put some large branches in the run that the bantams can get too pretty easily so they aren't picked on as much. And now he is starting to be mean to me! I feed them every morning and give them a snack almost every evening. Last night when I was taking some scraps from dinner he grabbed ahold of my hand and drew blood. I have 3 kids (ages 4, 4, and 6) who LOVE going out to the coop and now I'm afraid to let them go in at all. Any suggestions?? Is he always going to be like this? Thanks.