Are Apache and Rocky where they can see and hear each other all the time? The way you would put two groups of chickens together for a while before you integrated them together into one flock? Here we call it the "see-no-touch" method. Maybe they need to get re-acquainted with each other for a while before you put them together. I am not sure if @Shadrach, our resident rooster expert, would agree with this, or would think it would work.