We have a 18x21 coop/barn that is for our chickens and maybe a goat or alpaca. WE want to build a coop within the coop for the sleeping of said chickens. (or we can call it an enclosed sleeping area) The reason is for double protection at night and so they feel snug. I read that they need 3 feet per hen. AAH we are going to have 30 plus chickens although some will be meat birds and will not be with the rest that long. I am wondering how big the sleeping area actually needs to be? They will be pastured on 1/4 acre plus. We have 2.2 acres and will have them roaming as much as possible. Especially once we get a protector animal. Until then we may rotate enclosed spaces for free ranging. the additional fermented feed, water and nesting boxes will be in the large portion of the coop/barn. Please give me a realistic picture of what they need for sleep only. Or am I crazy for wanting their sleeping place to be enclosed?