I just posted these on another thread, but they may help you:
http://home.centurytel.net/thecitychicken/tractors.html
http://www.robocoop.com/coopdesign.html
http://www.pekinbantams.com/broody_coop_1.asp
http://www.pekinbantams.com/henhouse_plans.asp
http://home.centurytel.net/thecitychicken/tractors.html
http://www.robocoop.com/coopdesign.html
http://www.pekinbantams.com/broody_coop_1.asp
http://www.pekinbantams.com/henhouse_plans.asp