My Americana hen is not doing too well. I have not seen her eat any seed, but she did eat a little bit of an apple i gave her. Her tail is sagging and she has these white bumps with what looks like scabs on her comb. I did not think theses were from my other 4 hens because she doesnt get picked on. She also closes her eyes a lot, an seems as if she doesnt have good balance when, which isnt very often, she walks around. Please help me, she is like a child to me. Do you know of anything that might be causing her to be like this? And if so, what can i do to get her back to health?