Hello all, I currently have 4 birds about a week old, I bought a coop from craigslist in wonderful condition,http://www.amazon.com/gp/aw/d/B00CM...icken+coop&dpPl=1&dpID=61-RvXilVaL&ref=plSrch and I also have the extension for this coop as well. I would really like to build an additional run for this coop because it seems this coop may be too small to house my birds full time. Has anyone out there built a run for this coop? Or anyone maybe have a good idea on how to add one? Thank!