From October 1979 through November 1980, a wetland habitat evaluation study was conducted on the Upper Des Plaines River wetlands near the village of Pleasant Prairie, Wisconsin. The study was designed to address the following subjects: Species diversity, seasonal occurrence and relative abundance of non-game and game bird species; Frequency and type of bird use of the area during migration; Seasonal occurrence and relative abundance of fish species; Use of the area for spawning, rearing, and residency by fishes; Occurrence of invertebrate species in the river and associated wetlands; Occurrence of other wetland vertebrate species such as mammals, reptiles and amphibians; Occurrence and distribution of plant species and their respective associations; Presence of threatened or endangered species (Federal and State listed) of plants or animals.