I have plans to expand my 14 by 7 foot run to accomodate 40 hens. I am curious abot how much space i realy need. I have intentions to advance this to about 4 to 5 times this size but i still don't know what is an acceptable size for them. I know they souldn't be cramped but it is still a viable concern to me as of right now because i am needing to house 4 different roosters soon and they will have thier own area.