Scientific Name Common Name Global Rank State Rank Federal Status WI Status Animal Group

Eastern Ribbonsnake (Thamnophis saurita)








Photo by Rori Paloski


Counties with Mapped NHI Occurrences

Eastern Ribbonsnake (Thamnophis sauritus), listed as Endangered in Wisconsin, is semi-aquatic and primarily found in bog relicts near or south of the Tension Zone. Eastern ribbonsnakes emerge from overwintering as early as mid-March and remain active through mid-November. They breed in spring shortly after emerging and give birth from mid-July through August. See the species guidance document for avoidance measures and management guidance from the Natural Heritage Conservation Program.


Species of Greatest Conservation Need (SGCN) are associated with habitats (or natural communities) and places on the landscape. Understanding relationships among SGCN, natural communities and ecological landscapes help us make decisions about issues affecting SGCN and their habitat and how to respond. Download the Wildlife Action Plan association score spreadsheet to explore rare species, natural communities and ecological landscape associations

Conservation actions respond to issues or threats, which adversely affect species of greatest conservation need (SGCN) or their habitats. Besides actions such as restoring wetlands or planting resilient tree species in northern communities, research, surveys and monitoring are also among conservation actions described in the Wisconsin Wildlife Action Plan because lack of information can threaten our ability to successfully preserve and care for natural resources.