Okay, so about two weeks ago I found my four year old red star hen sitting on the ground in the coop, not moving much. She still seemed pretty perky (bright eyed, head up, etc.) but I brought her inside and put her in a cage with some sugar and vitamin water. She wasn't eating anything, but she drank a TON of water. Also, she was pooping smelly, watery green discharge. About 4 hours after I brought her in, she layed a tiny, soft shelled egg (not quite normal: it didn't have a yolk and looked like it had a piece of poop in it) and then continued to improve until I let her back outside and she was completely normal again. Anyway, I thought she was all better, but this morning I went out to the coop and she was sitting on the ground again, lethargic, and her abdomen was swollen like with fluid. I've brought her inside again, and she seems exactly like she was last time, except she hasn't laid an egg and she's not pooping at all, which worries me. I have her on sugar and vitamin water, but that's all I can think of to do. Additional information: I tried giving her a warm bath in case she was egg-bound, but she hated it and jumped back out. She's been eating all stock mash and scratch grains, as well as free-ranging on the warm days, and she hasn't laid an egg for months. None of my other chickens have had any of her symptoms. She's been through a lot in her life (worms, mites, cattle panels falling on her, etc.) and she's quite a trooper so I'm hoping that we'll be able to get through this together. Any input on what she might have and what I can do would be greatly appreciated!