Sounds very similar to Marek's diseaseI have had 2 hens die with similar symptoms about 3 months apart. My last hen started exhibiting symptoms about a week ago. She seemed off balance and like one of her wings was hurt and droopy. I checked her out and there was no injury. Over the past week she progressively became more paralyzed. It’s like her legs wouldn’t really work. She was still eating and seemed feisty but just progressively worse. She would even come out of the run into the yard sometimes so I thought maybe she would pull through but she eventually just couldn’t even stand at all. I am in Orlando, FL. She is about a year old and recently molted.
Are you aware you have a state lab that you can overnight a bird to for fairly cheap testing?
https://www.fdacs.gov/Consumer-Reso...iagnostic-Laboratory-BADDL/Lab-Tests-and-Fees