I have a 6' X 10', inside dimensions, coop and currently have 11 hens in there. Now if I am figuring right, I could have up to 15 in that space. Is that right? 4 square feet per bird? They do have an attached run but don't use it too terrible much in the winter now unless it is nice and sunny out there. I was hoping to add some new hens this spring and don't really want to add another coop, poor dh doesn't want to help build one. I have been trying to get him to clean out one of the sheds and combine his things into one shed and then I could just move the other one and add a run to it but I haven't gotten very far with that either. Any other ideas?????