Home Forum Resources Shop Journey Log Back to map



intro1234567891011121314151617181920212223


Timeline
Lewis and Clark
SHOWING RECORD: 6 of 17   Prairie Rattlesnake
PreviousNextJournals and Maps
image: Prairie Rattlesnake
Photograph by W. Perry Conway/Corbis
Prairie Rattlesnake

Crotalus viridis



First Noted by Expedition
June 15, 1805, Great Falls, Cascade County, Montana.
 

Description
Usually greenish to brownish (some populations pinkish to reddish-brown) above. Well-defined brown blotches down midline of back; white to yellowish lines on head slanting backward. Length: 0.8-3.8 ft (0.3-1.1 m).
 

Habitat
Great Plains grassland to rocky outcrops, talus slopes, and prairie dog towns.
 

Range
Extreme western Iowa to the Rockies, southern Alberta to northern Mexico.
 

Note
The prairie rattlesnake, which occupies a large swathe of the central part of North America, used to be considered a subspecies of the western rattlesnake, Crotalus oreganus.

Species information from enature.com
ADVERTISEMENT

Subscribe Online
Your subscriptions help National Geographic conservation efforts worldwide >>



ADVERTISEMENT
Brewer's Blackbird
Bushy-Tailed Woodrat
Cutthroat Trout
Long-Billed Curlew
Pacific Nighthawk
Prairie Rattlesnake
Swift Fox
Water Terrapin
Western Meadowlark
Mountain Lady's Slipper
Narrowleaf Cottonwood