Does anyone know where I can get some plans for those large, shed-roof style coops they used to have on poultry farms? All I can find are either small coops for backyard chickens, or monstrous barns. You know the ones I mean - 50-75 feet long, with about 10-foot pens inside that each lead out to their own run. They seem ideal for breeding pens for different breeds. (If they are not, someone tell me!) Thanks!