This quail had a pretty bad infection, I'm not sure how long its had it and I feel awful for not noticing it sooner, poor little dude. I culled it anyways because I'm not sure what I'm dealing with exactly, and I don't want to mess around :(
I don't know much about respiratory/sinus infections, but I think this might be mycoplasma. I don't think it's coryza since it didn't smell or anything, but I'm not entirely sure? None of the other quail appear to have this infection, and I watched them for over an hour for excessive sneezing or open-beaked breathing and looked them over for nasty eye-goobers but they all seemed perfectly fine and very active. This kind of infection is totally new to me. I know mycoplasma is a permanent carrier-virus even when treated, and can infect other healthy birds, but I keep closed flocks anyways...but I don't want any of my other birds to suffer like this one :(
The problem is that I also have other birds in separate pens - peafowl, chickens, geese and pigeons and I'm afraid some other birds might have gotten some cross-contamination, but I'm not sure if there's a ground zero or if this quail was it. None of my other birds have any signs, but I'm terrified that they'll develop it. I've been very careful to take care of my gamebirds first for feedings, and use separate boots/buckets/gloves than what I use for the chickens.
But my main point, and concern, since I have so many different types of birds: What kind of antibiotics should I use for what birds, and what dosages? If at all? For pigeons, geese, chickens, peafowl, and of course the quail. I'd really like any sort of help here, I've never had this happen and I've had different birds for 10+ years and I'm super scared :(