avian botulism causes
Avian Botulism (Limberneck Disease) Avian Botulism is a paralytic, often fatal disease of wild and domestic birds resulting from the ingestion of a toxin produced by the bacterium Clostridium. Environmental studies have found seven toxins produced by botulinum bacterium; two of which, Types C & E, commonly cause mortality. Type C toxin occurs in the western United States and Canada.