yeah, they went through a molt over the last month or so...that's probably why. I was reading about proper nutrition during the winter, and saw something about increasing their fat and protein levels...so I put some cracked corn out for them. I also placed a piece of fabric (left over from when DW made youngest DS curtains) over the door. Just attached it with staples to the wood above the door. They seem to have gotten used to it, b/c they came right out when I called to them while I was placing the bowl of cracked corn in the enclosure! It makes sense, though....that they would need more fat and protein, especially during molting...to grow the feathers back and keeping warm.
Thanks for all the great comments! We are planning on building an actual coop this spring, after taxes....weather should be fine by then.