Sorry about your chicken. It would really help if you could get a diagnosis by sending her body to your state poultry lab. You can call them here to find out how to go about it or have your vet send the body, which would be more expensive:
https://www.fdacs.gov/Agriculture-I...on-Animal-Disease-Diagnostic-Laboratory-BADDL
https://www.fdacs.gov/Agriculture-I...on-Animal-Disease-Diagnostic-Laboratory-BADDL
