Hi, I'm a new chicken owner and recently my 3 hens who were laying 1-2 eggs a week haven't been doing so for about 3-4 months. One of my hens combs had fallen over about a month ago and I found out that's common when chickens get older (they're about 3-4 years old) but what is more concerning is that hen has been acting different and is getting worse. At first she stopped running up to me for food like my other 2 chickens, she'd either walk or wait for me to come to her. Then her posture changed, she was once a big healthy chicken who held her head high but now her tail points down, she lost weight and she doesn't hold her head up, she looks sad. When I noticed this I took her to the vets. The vets I went to didn't specialize in farm animals so they did their best, while at the vets we found out she had diarrhea and they prescribed her with Baytril Bird Drink. We had to make her a coop where she could see the other chickens but they couldn't come in and drink her medication. (We took her to the vets on 1Feb15) The next few days from then she seemed to have been getting better until yesterday (6Feb15) where all she'd do is stand there and would only eat from my hands but would drink on her own.Today is the 7Feb15 and she is a lot worse, she will stand up but if she does she looks as though shes sitting like an owl and almost falls backwards, she wont eat or drink and all she wants to do is sleep Also when she tries to walk she sticks out her wings and limps. Should I take her back the vets? What should I do?