I made a board about this before but I never really got a response to one question which is how much I can mix ages and not have a problem. I have a 12 week old EE, a 15 week old polish/silkie mutt, and an 11 week old black silkie (all pullets). I was wondering if I could put a 6 month old pullet in with them and have it work. I was thinking that if the pullet is bigger, my dominant pullet (EE) wouldnt be able to be nasty towards her. But I have also heard that if they dont have another chicken in their age group they feel lonely so I dont know what ages could work for them. I've only started with chickens this past summer so I really need help with this!