Starting Sunday morning, I noticed my hen's comb was all purple. I brought her inside and her color returned. Every morning since hand I've been noticing her comb becoming more purple. This morning she was very inactive. Her comb was its purplist, she was very light and weak. She kept her eyes closed and when she did open her eyes, she didn't open them all the way. She walked around huddled. She is molting and not laying. Any idea what is wrong?