I was only going to have 2 chickens, and since I have little construction experience and no one to help me, I bought a coop on ebay. http://cgi.ebay.com/Chicken-Poultry...-Cage-002-/110549323314?pt=LH_DefaultDomain_0 I now have 3 full size hens, and 2 Silkies, and my coop is woefully inadequate. I am happy with the run - it is a 7' x 7' dog kennel fortified with hardware cloth and a galvanized fencing roof. I was trying to figure out if I could salvage the coop I have, but I think I will try to build a new one. I have spent hours and hours on here, and have a decent plan in mind for building a simple coop, with adequate ventilation and lighting. I need to start and finish in 7 days while my husband is out of town next week. (He would not be supportive). There is a Habitat Rehab in a city an hour away, and nothing on craigslist (I have been searching for weeks), so I may just end up at Lowe's or Home Depot. What kind of wood should I use - I know there is OSB, sheathing, luan. What thickness should I get? I have a power drill, and I guess I need to get some kind of electric saw. Any advice would be greatly appreciated! I plan to take pictures of my progress.