Hi I need help... I live in the country and have over 8 acres and no resrtictions for building coops runs etc..I have never had a farm animal only dogs and cats. so am clueless I have 8 chicks right now ...hope to get 2 more... so 10 chickens Want to build a coop and run...Here is what i have to start with.; ... THE RUN A chain linked dog run that hasnt been used in years. Even has an igloo dog house in it in fact 2 but for monetary reasons will just fence over the top 1/2 of it . about 6 feet across by 15 or 18 ft.long BUT my problem... the floor is concrete... . Can Hens walk on concrete? Do i need to add straw or ??? on it ? I thought i might enlarge the pen by putting a 10 x 10 area outside on the grass too.plus intent to free range them on the property a lot. THE COOP ITSELF. I intend on putting a hen door in the metal building side into the run.. and have the coop inside the building with human doors inside the building to open into the coop to get eggs or clean. I have a few old windows might put one or 2 in the metal wall for light and air from outside The inside is 1/2 done too as there is a large 3 ft x 8 ft shelf that is about 5 feet off the ground on posts like a tall table... Electric plugs in there too for a light bulb or heat lamp or fan Just need to add side walls,bars for roosting. and shelf to put nesting boxes on. More questions. How high should the roosting bars be? Does the coop area need to be insulated b/.c its a metal building that isnt insulated?Or shold it be wood lined? How warm should they be in winter? A heating lamp or a light bulb in cold winter or would that keep them awake and stressed? The "shelf" or roof of the coming coop is old luan doors that sit about 2 " from the actually wall. Will this be good enough ventilation in there(its about 15 ft high in the building itself and about 30 x 40 ') for the coop to vent into.The buildings not air tight , has holes where the corragated roof fits on. or do they need actual outside vents? NOT vented into another closed in area like that .? The actual floor in the building which will be below the coop shelf is concrete. The coop area can be 3 ft wide because the garage door slides back right next to it. Cant build farther out.Coup build farther across Hope someone can answer thses questions before i start this project. Also anyone have dimensions on a portable run an easy light one?