I isolated her when I noticed the diarrhea and she is in a heated space, and she was on Corid in her water for 6 days but no improvement in the diarrhea. At first she was super thirsty, but now she seems to be drinking a bit more than normal but less than she was. I added ACV after ending the Corid yesterday. She has a good appetite and is still laying about every other day. The poop is dark greenish and watery/runny but no blood. Yesterday one of the poops had some stones from her gizzard in it, which I have no idea if that's normal or not? There is no white part to the poop either. Other than that, she seems fine, is feisty, eyes bright, clucks when I go in the room, and of the 20+ birds in the flock, she seems to be the only sick one. The flock was treated with Ivermectin for worms about 5 weeks ago because we had lost two birds for no apparent reason and haven't lost any since. I don't see any evidence of worms in her poop. She has been on layer mash, water, plain yogurt with probiotics a couple of times, a little banana, and cooked plain oatmeal, and some greens. I don't know what to try next and I can't spend money on a vet right now. I read somewhere give Epsom salts (1/2 teas.) to treat diarrhea but that seems like it would make it worse.