If you have a vet who can do a fecal float tomorrow, that could diagnose coccidiosis and worms. Where do live? There are some outbreaks of AI in some states, but I would suspect something more common like coccidiosis first. Have you heard of any outbreaks of AI in your area? Here is a map with some outbreaks listed:
https://www.usgs.gov/centers/nwhc/s...ogenic-avian-influenza-north-america-20212022
https://www.usgs.gov/centers/nwhc/s...ogenic-avian-influenza-north-america-20212022