I have converted a corner of a Wick building into a coop measuring 12 x 20. I have roosts and nesting boxes in. Sand over the existing asphalt flooring. Hardware wire over some areas for ventilation. There is one pop door to the run. It is actually a fenced area of about 1/2 acre with grass and trees. I am picking up 2 hens and a rooster from a friend who hatched them for me. They are laying now. She was going to give me 4 hens and the rooster but lost some of her flock to an unknown critter one night. So I was planning on getting 4 more hens from another friend the same day for a larger flock. Since everything will be new to both flocks can I put them together? I'm not sure how I would separate them. For the outside run it is such a large area, not sure how to divide it up without a lot of fencing. Do they have to be separated at night in the coop? If so, I will need to build more roosts on the other side of the room. If it makes more sense I could just start with the 2 ladies and the rooster and hatch my own for next year.