I have a small flock of seven hens and a few weeks ago I noticed my Sicilian Buttercup was becoming very light. If you were to look at her she would appear fine, her feathers are all grown in, she is very bright in color, the only thing off with her appearance is her comb which is smaller because of winter. But if you pick her up shes tiny! I haven't weigh her but you can feel her keel bone and its very thin, also she has almost no meat of fat around her bones. From what I have observed she is eating and drinking fine. Could it be worms? I'm not sure if I should separate her from the flock but right now I`m feeding her extra scraps and keeping a close eye on her. Dose anyone know whats wrong with her and what I should do?