Healthy ISA brown suddenly dies

[Coyoteowl]

If you behave her body, keep it cold and contact your state vet for a necropsy. How old was she? Here is a link for finding your state vet lab:
https://www.metzerfarms.com/poultry-labs.html

unfortunately, i was concerned with possible disease, and it spreading to the rest of the flock so I disposed of the body