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EASTERN
MASSASAUGA OBSERVATION REPORT This information is voluntary under Part 365, Endangered Species
Protection, of the Natural Resources and Environmental Protection Act,
Act 451 of the Public Acts of 1994.
Refer to the massasauga
information below to aid you in identifying your
sighting.
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| Status: |
Special Concern, it is
protected by the State of Michigan and is a candidate for federal
listing |
| Range: |
Entire Lower
Peninsula,. Although once common, populations may be declining due
to loss of wetland habitats and human harassment. |
| Habitat: |
During spring,
Massasaugas use open shallow wetlands or shrub swamps. They can be
found in crayfish towers or small animal burrows which are
adjacent to drier upland open shrub forest sites. During summer,
Massasaugas move upland to drier areas. Look for them
"sunning" in open fields, grassy meadows or farmed
sites. |
| Behavior: |
Sluggish, slow moving
snake. It may strike if threatened. |
| Benefits: |
Eastern Massasauga
rattlesnakes eat small mammals, amphibians and insects. The
Massasaugas are eaten by eagles, herons and some mammals. |
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Description:
- Massasaugas have thick bodies with colors that range from gray,
grayish brown or brown. Its back has large dark brown blotches with
smaller lighter brown patches on its sides. Young Massasaugas are
similarly marked with brighter coloration.
- This snake has a wide triangular head and eyes with slit shaped
pupils.
- Adults can be 18" to 30" in length.
- Young Massasaugas have small yellow buttons or "rattles" at
the tip of their tail. Adult "rattles" are grayish yellow,
like pieces of corn kernels, on top of dark rings.
- Snakes may bite to protect themselves.
Look alike Snakes:
- The eastern milk snake and eastern hog-nosed snake are harmless.
- A hog-nose snake will flare its head, coil, and may strike.
Eastern Massasauga Rattlesnake (Sisturus catenatus)

Photo by: James H. Harding
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Eastern
Milk Snake (Lampropeltis triangulum)
Photo by: James H. Harding |
Eastern
Hog-nosed Snake (Heterodon platyrhinos)
Photo by: Earl Wolf |
Click on an image to see a larger version.
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For more
information, visit our
Eastern
Massasauga Rattlesnake species page.
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