I have a decent little coop. I also have dogs. So I think I need to build a wire fence around the coop to keep chickens incarserated (ha ha) but wonder how high do I need to build this...do I really have to put a "roof" on the run too? I was thinking of a 6 foot fence all the way around it so there is a lot of room to roam (like a 10 x 15 foot area) but will they fly over this fence? All of the pictures I see have a roof....I AM putting a buried wire dog fence to keep THEM in a certain area but there would be nothing from keeping the chickens elsewhere if they were free range. Any advice? Needless to say I have no chickens yet....I wanted to post a photo but dont know how to do that yet.