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WESTERN black-necked gartersnake

Thamnophis cyrtopsis cyrtopsis
NON-VENOMOUS
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Map accurate as of 4/11/2022

Habitat: Black-necked Garter Snakes use a wide variety of habitats in Colorado. They are most commonly found using permanent or intermittent streams and vernal pools, but individuals may wander some distance from a water source and can be found in open grasslands, especially near arroyos or temporary pools. (Hammerson, 1999).
Distribution:  The Western Black-necked Garter Snake occurs in southeastern Colorado, where it can be found below 6,000 feet, and in southwestern Colorado below 6,500 feet. (Hammerson, 1999). 


Cited & Additional Resources
Ernst, C. H., and E. M. Ernst. 2003. Snakes of the United States and Canada. Smithsonian Books, Washington and London. 167 pp.

Hammerson, G. A. 1999. Amphibians and reptiles in Colorado. 2nd ed. University Press of Colorado, Boulder, Colorado. 364 pp.

Stebbins, R. C. 2003. Western reptiles and amphibians. 3rd ed. Houghton Mifflin Company, New York, New York. 362 pp. 

Account compiled by: Graham Zephirin
Reviewed by:
Last updated: 4/11/2022 by Rémi Pattyn

Suggested Citation
Colorado Partners in Amphibian and Reptile Conservation.  2021.  Species account for Western Black-necked Gartersnake (Thamnophis cyrtopsis cyrtopsis). Compiled by -----. http://www.coparc.org/ [accessed date here]. Editors: ------.

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Visit our parent organization, Partners in Amphibian and Reptile Conservation (PARC), for more information on national conservation efforts and other  regional groups. This website and any products posted herein are  officially recognized by the national entity, Partners in Amphibian and  Reptile Conservation (PARC), as the efforts of an approved PARC chapter.


  • Home
  • About
    • Mission
  • Steering Committee 2023
  • Events
    • Meetings >
      • 2023 Annual Meeting
    • Photo contest
    • Field Trips >
      • 2021 Field Trips >
        • 2021 Southeastern Colorado Bash
      • Field Trips 2015
      • Field Trips 2014
      • Field Trips 2013
      • Field Trips 2012
  • Species
    • Glossary for Species Accounts
    • Amphibians
    • Turtles
    • Snakes
    • Lizards
  • News
  • Contact Us