In California, we have a free necropsy service for back yard flocks. One person here submitted one from a flock with similar symptoms. It was MG though.I thought i would a list of the affected states so if anyone is having a bird illness question the first thing they should check is the state they live in. This is a list from Word Press.
Infected Commercial Flocks. Commercial flocks have been infected in at least 15 States: Arkansas, California, Idaho, Indiana (May 10, 2015), Iowa, Kansas, Minnesota, Missouri, Montana, Nebraska (May 11, 2015), North Dakota, Oregon, South Dakota, Washington and Wisconsin
Symptoms
* Lack of energy and appetite
• Decreased egg production and/or soft-shelled or
misshapen eggs
• Swelling of the head, eyelids, comb, wattles, and hocks
• Purple discoloration of the wattles, combs, and legs
• Runny nose, coughing, sneezing
• Stumbling or falling down
• Diarrhea
• Sudden death without any clinical signs
http://www.aphis.usda.gov/publications/animal_health/2011/ProtectYourBirdFromAI_Eng.pdf