I got my rooster for free because he was people aggressive. He is now the best rooster I could ever ask for. He even gets on my shoulder and rides around hunched while I do my chicken chores and rides to the coop at night. When I first got him I picked him up as often as I could, if he tried to attack I would stomp the ground in front of him with my arms spread and yelling no. Chickens are very smart and it is important for you to be the head rooster in your flock. Right now they think you are a rooster on the bottom of the pecking order. Let them know who is in charge. Roosters are very prideful things and it hurts their pride to be carried around like a football. Make sure you tame the head one first and do it in front of the flock. All will follow the leader. Next time you go out to them, pick him up and show him to the flock, then carry him around for all of your chores. At the end of your chores, show him to the flock again just to make sure. He will try again the second day so you just repeat the process. Usually by the third day they stop trying. You may get one more try about a week in, so you keep it up.