So, my chicks are 12-13 weeks old. I know I have some roo's that came as packing peanuts. Im just not sure how many of them there are. All the packing peanuts are going into the freezer once they get to be full sized. Any way, I have a local friend who has some chickens. She already has a very dominant roo. Well she bought some chicks a while back and one of the leghorns she bought ended up being a roo. He is getting just starting to crow and is getting bullied by the dominant roo. She offered him to us and we said we would be glad to take him. She said we can pick him up any time. So, how do I go about introducing a new roo to a flock of young chicks ?