Great Blue Heron (Ardea herodias) Science Article 11
The parasitic roundworm, Eustrongylides ignotus [agersk , has been known to cause mortalit y and morbidity in members of the heron family in the eastern states of North America. To date no previous records exist for this nematode in Wisconsin.
D . M . Swinefordi, Patuxent Wildlife Research Centeri