I was thinking something along those lines. When we took her to the vet they said she was eating fine but clearly she wasn't because she has a hard time eating bigger pellets which they didn't notice. I was thinking it's gotta be more along a throat or beak issue because if it was respiratory I'd hear louder wheezing but shes not able to drink water cleanly or eat cleanly, or as cleanly as a chicken can. I uploaded some pictures up above so maybe you can glean something from those. But for me right now, I'm trying to figure out which symptoms are root causes and which ones are cropping up because of the illness. There are some that would be weirdly unrelated in humans like inability to eat and drink as well as eyes that have trouble opening. But I'm not sure what causes all of these symptoms together and the vet visit we took her to on Tuesday was over $100 for them to do an external exam, give her a little bit of food and some antibiotics and then send us on our way.