She either has a respiratory illness which should clear up eventually on its own, although it could keep coming back. Or she has an avian virus that causes cancer tumors and her heart, lungs and other organs may be affected. That will lead to death.
I'm sorry, but there's not much to be done unless you can get some Tylosin and treat her for the respiratory symptoms and see if that clears it up.
This will be self diagnosing. If she gets better, it's likely a chronic respiratory disease, which the entire flock as been exposed to. Or if she continues to get worse, then you would suspect an avian virus, likely lymphoid leucosis, which the entire flock has been exposed to. If she dies, you can have the state animal testing lab do a necrospsy and confirm cause of death.
I'm sorry, but there's not much to be done unless you can get some Tylosin and treat her for the respiratory symptoms and see if that clears it up.
This will be self diagnosing. If she gets better, it's likely a chronic respiratory disease, which the entire flock as been exposed to. Or if she continues to get worse, then you would suspect an avian virus, likely lymphoid leucosis, which the entire flock has been exposed to. If she dies, you can have the state animal testing lab do a necrospsy and confirm cause of death.