Avian Botulism (Limberneck Disease). Posted on August 21, 2014 - 3:36pm. 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.
Definition of pharynx for English Language Learners. medical : the part inside your mouth where the passages of the nose connect to your mouth and throat.
The pharynx is the section of the throat between the skull and the  esophagus that propels food when swallowed into the esophagus. The  epiglottis at the bottom of the pharyâ¦nx pivots to send food to the  esophagus or air into the lungs by way of the voice box (larynx). 3 people found this useful. Tim Mullican.