Ok lets say that i wanted 5 chickens. All five chickens grew up and are 6 weeks old but then 4 of the chickens die. I get 4 more chickens. When these chickens are old enough to move from the inside brooder to the outside coop what do i have to do to stop the older chicken from hurting the younger ones? Do the older ones always atack the younger ones? A close friend bought one chicken to add to the group and it got killed by the oldest chicken.