Hello, am new to message board, have had a flock of backyard chickens for about 1 1/2 years now with relatively few problems. We have them for eggs only, and they all have names. This morning we had to put a rhode island red down when we noticed she had become very ill. She had lots of feces around her bottom, and her cloacae, hope I spelled that right, was bulging and dilated, with the start of small maggots around the area from flies. We had no idea if it was a stuck egg, or an internal infection, or something else. It looked like it looked if you've ever seen a farm animal with a prolapsed rectum, to try and better describe it. She was in a high level of distress, and we made difficult decision to put down. We need HELP, to see if anybody knows what likely caused this, we are relatively inexperienced like I said. We will treat ALL chickens(about 20) with a antibiotic if anyone thinks it might be a contagious infection. PLEASE HELP IF YOU CAN!!! Thank you very much!