I might be getting two or three new hens in a month or two, and I'll need to quarantine them for at least a month before I integrate them with the two hens I have. My backyard is too small to accommodate two coops, so I need to build a tractor to house the new girls just for a short time. It needs to be small, and I want to be able to break it down for storage in case I need it again in the future. So here's my plan so far: I got a collapsible wire dog crate 36"x24"x24" to use for their house (I can wrap it in a tarp to enclose it and I'll add a 2-by for a roost) and I'll be building a 36"x24"x6' run to attach to it. I'll be building the run out of 2x2's and hardware cloth, in panels that I'll connect with zip ties so I can knock it down easily later. The run will have a couple of hinged openings in the lid for access for feeding etc. Here's where I'm looking for input . . . first, will a house that's essentially a tarp tent be warm enough (in SoCal) in February for two pullets approx. 8-9 months old? I could try to figure out a way to add some insulation but I don't want it to be too involved. Second, will the house part be ok on the ground, or do I need to figure out a way to elevate it? I'm probably over-thinking this thing, but it's a rainy night and I have nothing else to keep me occupied . I'll be starting construction next weekend so I'd like to have my plan in place. Bring on the ideas please!