I have a small barn, maybe 25’x20 that used to House 2 horses. I’m in the planning stage of getting chickens and am wondering if the barn would be too big for 5-7 chickens? I was thinking of building a enclosed run off the barn for them. I’m in upstate NY and it does get cold in the winter. Could I use the barn as a coop or do they need a smaller coop? I’ll be cleaning out all the junk in the barn over the winter.