My Rhode Island Red is taking a turn for the worst I fear! I thought that maybe she was broody at first because she didn't want to leave the coop. After a couple days of noticing her not eating or drinking or moving much I took her out and set her down and she just kinda slumped back to laying down. No interest in food or water. She has no lice or mites or fleas. Great food that is dry, a brand new coop that is clean. Her vent was messy so today I brought her in and gave her a bath, I had to put her head on something cause she wan't holding her head out of the water on her own. After washing her I could see that she has a small dime sized white patch below her vent. I think this is a kind of yeast infection. I blow-dried her and made a bed for her in a plastic tub. Then I used a dropper to give her some water. I infused it with garlic, apple cider vinegar, and some chia seeds(they fir in the dropper and I thought maybe they could give her some nourishment). Then I just gave her some more regular water a while later. I left her alone for a couple hours and then came back to check on her. She can't even hold her head up at all, it's kinda just lobbed over to the side and forward(she is still breathing and alive). I broke open an antibiotic capsule that I had on hand and mixed it with water according to a ration I found on another chicken website and gave her the recommended dosage. When I first opened her mouth to do this there was a clear mucus or something in her mouth(just in her mouth from what I could see, her throat looked clear) so I sucked this out with the dropper first before giving the antibiotic. I also got some plain greek yogurt and watered it down a bit so it wasn't so thick to swallow and droppered than in her mouth as well. I hope some of this will help her pull through. But aside from the yeast infection I don't know if something else is wrong with her. Help!! Any idea as to what this could be or if I can do anything else to try to save her?!