My sister has chickens and a couple weeks ago, she saw her chicken (a Jersey Giant) huddled up in the coop and acting weirdly. She noticed she had "thousands" of mites completely covering her. She put mite stuff on the chicken, bathed it, then put mite stuff on the chicken again. She then cleaned out the coop and put mite stuff on all of her other chickens and she put the chicken back in the barn a couple days later. Then she noticed that the chicken could barely walk and the others were picking on her and that she felt like it only weighed a pound so she isolated the chicken. She figured it was anemic from the mites and started to feed it sweet potatoes, peanut butter, oatmeal, and butter. She started to gain the weight back But now she isn't drinking or eating and she's losing he weight again. Her poop is purely urates and water. She put vitamin stuff in her water as well. Her comb, wattles, and other face parts are pale too like she has anemia. And every time she poops it seems like it hurts. It's a really old chicken and stopped laying eggs years ago. Does anyone know what might be wrong?