About to start building a coop for my silkies. How much sq. ft per silkie? I know it should be less than a standard hen. I have never had silkies. Do I need to put a roost bar inside? I've heard people say they don't roost, they sleep huddled together. I am gonna put 2 nesting boxes attached from the outside so it doesn't take up any floor space and can get eggs from outside. I was thinking about building 3'x4' = 12sq feet. I have 8 silkies will that be big enough? I would rather have extra room so if I get any more. Was basically gonna build a box with venting around the top, a small door for them to go in and out and a large door so i can clean it out.. If anyone has pictures of something I can build cheap please feel free to give your advice. I want to be able to securely lock them up at night. This house will be placed inside a chain link dog run 10'x8'. I just lost 8 lavender orps from predators. I am thinking coyotes or wild dogs. So i want to build this coop secure. Will also be securing the chain link dog run. I want to have the coop secure enough that if they get into the run won't get into the coop.