Clostridium botulinum, type Cβ was identified as the causative organism in an epornitic which occurred on a tidal estuary in New Jersey. Approximately 1,000 individuals of twelve species representing five families of birds were intoxicated. Muskrats and killifish were also affected. Seven species previously unreported as affected by botulinus intoxication were recorded. The role of the food web in the epizootiology of botulinus intoxication and the intraspecific relationship between the killifish and Least Terns in the continuance of the outbreak is discussed.
