I have a flock of 6 hens about a year old, I am looking at adding 3 hens and 1 rooster that are about the same age. How do I go about doing this? And it's kind of a space issue I don't have two coops? How do you integrate 2 flocks in one space? I know how to add young chicks because they are usually in a brooder before I add them to a coop. Any advice I'd appreciate! I pick up new flock next week.