I am a newbie here! Got four silkies about 4 months ago. I believe I have 3 hens and 1 roo (but obviously cant be sure, but I am 99% sure). We got 3 polish hens today. My question is, what is the best way to integrate the polish hens with the silkies and when should I do it? The chicks are in a brooder right now (obviously).