I have 8 white leghorn hens who are about 7 weeks old. Everytime I let them out of their pen they run at each other, fluff feathers, peck, and also fly about in what seems to be a dominance thing. Some seem more aggressive then others, and I have 2 that just kind of sit back and not want any part of it. Is this normal? Are they trying to determine their pecking order? Any info would be appreciated 
