Hi, I was raised on a farm but haven't had chickens since I was a kid. This is my first time raising from day old chicks. I live on 1.5 acres in NorCal. Right now my concern is the hen house structure. I plan to free range. I will be browsing the existing threads for ideas. My main question is if I free range 10 chickens, do I still need a coop at least 40 sf if they will only be in there at night? I will also have a covered enclosed run that I plan to be about 6' x 9'.