We have 7 chickens and two roosters. Three hens are in one house with one roo, and 4 are in with the second roo. All of them are full grown around a year or less old. I love them, and I am getting three more this week! I want them to live with the 3 hens and the roo. The new ones are about a year old. I need tips on how to introduce them, how to be sure they are safe, etc. Will the other chickens hurt them? Will the roo like them? Is it OK to just put them inside and watch to see what occurs? Thanks.