I'm am so new at this and have read so many interesting methods that my head is swimming. The 8x10x6 coop was were when we rented and just needed sweeping from last user quite some yrs before. Older chicken wire run 9x16 has been reinforced, wire roofed, no free range. Good ventilation and pop door open 24/7. Mid-Sept, insert 1 Banty Cochin rooster and five mixed hens all 2015 hatch, purchased from owner that decided he didn't want to fool with them. All doing well, so far, fat, happy and laying. Now comes winter, desert area 60 miles East of Reno, NV. Never much snow, lots of wind and below freezing quite often. Some say, no light, let birds acclimate to cold, some say, yes, heat lamp, insulate. What is best? So far it's only mid-Nov and this is what I've been doing. Coop not insulated, stud walls, pop door still open 24/7, heat lamp, on center beam, goes on as long as weather at freezing, goes off above that, food and water, grit and oyster shell inside. Straw on floor, thicker under roosts and nesting area, none around food and water. Straw on dirt floor of run to help protect feet. They all still seem to be fat, happy and laying. Should I plastic around the run? And what about mites or lice that you hear about? I've never even checked them, they roll in the dirt from time to time, but don't appear to be preening or itchy. Should I be doing something as a routine in that area?