Winter will be here in MN very soon and our Australorps are molting in a big way. I have a couple of questions. 1. Do we need to worry about keeping them warmer during the chilly nights (which will very soon turn into very cold nights?) 2. I've read that adding some cat or dog food to their diet may help them to grow new feathers faster. This is CANNED dog or cat food, right? Any help anyone can offer is greatly appreciated.