About 6 months ago, I rescued a Buff Orpington hen. She was very skinny at that time, which attributed to mistreatment, but she is still skin-and-bones. She has no fat or even flesh of any sort on her body, and she must only weigh 3 pounds. She is also molting a lot, laying every day at the same time, and isn't really growing in new feathers. She is always extremely hungry, but is also the most energetic hen, and shows no fatigue despite her taxed body. I have dewormed them (though only with natural dewormers like cayenne pepper and diatomaceous earth) and the other hens seem fine in terms of fat. None of them show signs of worms or other parasites. Anything I can do to help her?