One of my lavender ameraucana hens is inside today. She's not looking good at all :/ I noticed her last night but couldn't get to her. I pulled her out this morning and brought her in. She got a nice warm bath and blow dry and I mixed her up a cocktail of scrambled eggs, save a chick electrolytes, and a little sulfa...however that's spelled. ..just in case is cocci. I'm hoping she pulls through. She has no interest in food or water, I had to use an eye dropper to get the cocktail down her throat.
I hope she turns around for you, we lost a few last fall to what we figured was cocci (weight loss, diarrhea, no respiratory symptoms at all) and it is frustrating because they hide their symptoms so well until it is so late in the process.