I only have 4 chickens and she is my strongest and friendliest. since I have only had these ladies for about a year, I have no idea what could possibly be wrong. All I know is that I want to do whatever I can to help her feel better. They are locked in a coop at night and free range during the day. The other 3 chickens are healthy. I did check for egg binding that I read on this site... but I don't know what else to do. Any help would be appreciated.