My favorite chicken, Big Bertha, is having a bit of a problem. I just got home and she had blood all over her back. I brought her in and cleaned her up. It looks like the bleeding is coming from a broken off feather. Could that be from the cold or is it the others chickens that have been pecking at her? She is definitely at the bottom rung of the pecking order and has been losing feathers on her back end for a while. So I have put her in a dog crate in the garage with same straw and food/water. Will she be OK on her own and how long should I keep her seperated? Also, Betha and some of the others with large combs are starting to get discoloration on their combs although I have already put vaseline on them. Should I be worried and what will happen? Advice would be greatly appreciated. Our first winter with the girls and I am fretting! Thanks!