I am renovating an existing coop and am wondering if I should insulate. I live in New Mexico, in a high desert climate. Winter lows at night average 10s-30s in the colder months with highs in the 40s, however we are in zone 5, so we can get colder spells. I've been visiting other coops in the area and none have been insulated. I do plan on constructing teh coop well, minimizing drafts, and providing covering for teh windows. Thank you!