OK, so my coop's almost done and a store near me has chicks I'd like to purchase 2 of (white leg and a aracuna? (sp? One of the EE'ers I think you guys call em) and a guy up the road sells some Buff Orping's that I'd like to have one of. The BO is 10 weeks and the store has hens that are young, but don't need the light (pullets?) CAN I BUY 2 CHICKS AND THE BUFF OR. AND PUT THEM TOGETHER IN THE COOP RIGHT AWAY? I know I've heard chickens will kill each other, but if they are from different areas, ages and new to thenew home, are they still aggressive to hens they haven't met? Am I making any sense? LOL What is the rule of thumb? Thanks! I'm new obviously!