Biological Threat number three on a five-point scale RSOE Emergency and Disaster Information Service.
Officials have no theories as the cause of death of thousands of ducks on Lake Erie and the river Maumi. Avian flu has not been confirmed. A mysterious disease was found a few weeks ago, a few birds, on Friday found a 200. Birds first head dropping back, then deteriorated motor skills, then die. Laboratory tests found nothing.
In the department of Wildlife said that can not yet set, which was the cause of death, but suggest natural causes.