It really depends. Some roosters may actively demand submission immediately. Some are mean, some are much more “personable”. He is the leader right now and if he’s good to your girls now, hopefully he’s good overall. You may find him pacing the fence line bc he wants to mate them, bc he’s...
Good luck. Yes, extra coop great for see and don’t touch. Do this for 2 weeks, at least. Then, open up extra coop for a bit of integration…while you are there and watching. Do this for 3-7 days (depending on how it goes), keep watch during this phase. Next, put new girls out and into run...