I may already know the answer but I do need some advise or tips. I was given an older chicken back in June 2018. No one knows how old she is. Recently she became ill; not moving from the coop, just sitting with her eyes closed, obvious signs of diarrhea (almost smells like spoiled milk or bad bread), she was not eating or drinking. She is currently in my spare bathroom. I bathed her bottom and sprayed some antifungal/antibacterial spray. I have syringe fed her some dextrose/electrolytes and water. She ate a little out of my hand. Seems more perky now but I’m still concerned. Vent Gleet?