One of my first chickens I ever got is now dying. She is a leghorn chicken and is about 4 and a half or 5 years old. At first, she didn't move around a lot, but she still could walk and she was active. But now, she sleeps all day, doesn't eat, and she can't walk. Now her comb is bleeding, and I also noticed that there are these little bugs under her in her feathers. If you pop the back of them, red stuff comes out which I am assuming is blood. Another thing is that about a mouth ago or something, she was attacked by a raccoon, but the raccoon didn't injure her at all, except for maybe pulling out a few feathers, and she was traumatized for about a week, but then she recovered. So usually, when I come home I find her on the floor of the chicken coop. She looks dead, but she isn't, because I can still see her breathing, and she can't hold up her head anymore, and I doubt that she can open her eyes anymore. Ants on her now, and I know she's probably going to die soon, and I'm really sad. It's probably too late to find a cure, but is there anyway I can heal her? And more importantly what is she dying from? Old age? I'm so grateful to anyone who answers! Thank you. P.S. We kept a lively chicken with her, but the lively chicken seems fine, except for that she's losing a lot of feathers around her neck and it seems like it's taking forever for the feathers to grow back. Should we separate the chicken from the dying one to prevent this one from dying too?