I let my 11 month old chickens out to free range. (supervised due to hawks) They have had "see you there" contact for 5 weeks with my 10 week old babies in their separate little run. Their runs are not adjoined though, there's about 3 feet between the runs. Well today, my 10 week old BR cockeral decided to challenge my 11 month old BR hen.(she's molting but still pushy) He stood up real tall, both their neck feathers were flared. Lots of intimidation squawking from both of them. Then he crowed for the first time at her, which she wasn't happy with. When she started going after him through the fencing, I pushed her away. (good thing too because she cut her comb a bit trying to get to him) I'm not planning on integrating them for probably another month or so, but should I be worried? Will I have trouble integrating them? I suspect my BR hen is going to be knocked down a peg or 2 as he will probably be the same size as her by then. I plan to still free range them in the area of the little ones to keep them getting used to each other. Anything else I can do to lessen the fighting?