I have 12 chickens and 2 of them are buff orphingtons. I had one die about 4 weeks ago and now my second one is acting the same way. I was actually out of town the first time and who was watching them noticed she was just laying in a corner. When I finally got to her , her rear end had tons of poop packed in her feathers. I put her in a tub and cleaned her up. It seemed very hard and swollen in the vent area and I really could not do an exam. She drank a little, and I put her in a warm bath again that night, but she would not stand so I put her in a warm cage in the garage and she died that night. Now my second one is acting the same way. I was able to exam her and could not feel an egg, but it was swollen and hard in the back end. Her comb is looking pretty bad, but they usually do in the winter with the cold. She was active and fine yesterday. I'm really new at this, so who knows if I'm doing this right. I tried feeding her and giving her water, but no interest. She's in the warm crate in the garage. Any ideas?? Thank you!