![]() ![]() The primary reasons for the massasauga's decline in Michigan and rangewide are habitat loss and fragmentation, human persecution or indiscriminant killing, and illegal collection. However, Michigan's massasauga population also has declined. Thus, the eastern massasauga's long-term viability in Michigan has important implications for this species' persistence rangewide. Michigan appears to be the last stronghold for this species with more massasauga populations currently than any other state or province within the species' range. Studies to date also have found that massasaugas were not be able to survive the winter when moved to a new area outside their home range presumably because they were not able to find suitable hibernation sites. The massasauga also appears to have strong site fidelity, often returning to the same hibernation site or area each year. Most people in Michigan may never even see a massasauga in the wild because of its secretive behavior. When it is disturbed or encountered in open habitat, the massasauga prefers to move to a more hidden location. It prefers to avoid detection by hiding under vegetation, woody debris or other cover or remaining motionless and relying on its cryptic coloration. ![]() Although it's venomous, the massasauga is a timid snake. The eastern massasauga is primarily associated with wetland habitats but some populations also utilize adjacent upland habitats for parts of its life history. It is a small- to medium-sized snake, with adult lengths averaging 2 to 3 feet. It is Michigan's only venomous snake, and one of only two rattlesnake species that occur in the Great Lakes region. The eastern massasauga rattlesnake ( Sistrurus catenatus catenatus) is a unique and fascinating part of Michigan's natural heritage. About the Natural Community Classification. ![]()
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