Hiya folks, I have an Astralorp of unknown age. She came to us a few months ago and was always a little bit ratty looking w/gnarly feet -but they seem to have gotten worse since the cold weather hit. Any ideas? Could it be frostbite, even though she sort of had it before it was anywhere near cold? Should she be separated? Any cream or topical salve that would help? Thanks a bunch in advance!