I have an 8x10 aluminum shed with a large kennel run that runs in front of the shed and alongside my house, this area was a kennel that kept 3 dogs at one time. My dogs are spoiled so they have the rest of the back and front yard to run in and then come in the house. The largest part of this kennel has a big, prolific apple tree on one end. I can only keep up to a dozen hens as I can't keep a rooster within town limits. I plan on covering the entire run as there are a lot of cats and a hawk that hangs out in my neighbors tree so maybe I should just fence off that end of the run? My other question is about the shed, I'm North of Reno Nevada, as I'm typing it's snowing and about 20 degrees out there, what is the most efficient way to heat this much space and should I insulate it first?