upsetting the apple cart?

Wondering... My chicken coops and pens are right next to each other-- there is just welded wire separating them. My babies are out all day now. They are almost 11 weeks old. The are looking like small chickens now--- not chicks. Two of the baby roos are crowing. With this in mind the big chicken pen seems to be in chaos behavior wise. Alpha roo is being a real jerk to everyone--- including me. There are skirmishes erupting everywhere. Even though they have very little contact aside from sticking their heads through the wire fence it seems the presence of the young pullets and roos may have disrupted their pecking order--- is it possible? --- or could it be something else?