I have 6 young hens, all 6 to 7 months old. I see them facing off with one another and jumping. The pecking order seems set already. They all do it but The main 2 that do it are 2 EE. They are always wanting to face off with everybody else and puff their feathers out and jump. But nothing serious ever seems to really come of it. They seem to be aggravating the others with it more than anything. Is this a trait of EE's maybe or just playing around?