Is there a recommended height that a coop should be? I am planning 4' x 4' to get 16 square feet for coop floor. I'm getting 4 Buff Orpington chicks Feb 19th and want to have this figured out and started by then. One plan I looked at is movable. It has 2 nest boxes attached but is only 3 feet tall. The other is not movable and it also has 2 nest boxes attached but it is 5 feet tall in front and at the rear it is 4 feet tall (slanted flat roof). I just want the chickens to have enough room when they are full grown to be happy. Their run area is 4'x10' so I think that is big enough. They will also get out if the coop isn't movable so they can get fresh grass/bugs. Or worse case I will just do a movable pen for in the yard. Any help would be appreciated greatly. Oh I also live in the south where it is hot hot hot in summer and definitely cold this winter. Thank you in advance.