for Hypsiglena chlorophaea (Desert Nightsnake)

Reports from BC Conservation Data Centre

BC Species Summary


BC Conservation Status Report

View Map View

Mapped Known Locations

Reports from National / International Databases

E-Fauna BC: Electronic Atlas of the Wildlife of British Columbia


Environment Canada's Species at Risk Website


Global Comprehensive Report (NatureServe Explorer)

Status Report

COSEWIC. 2011g. COSEWIC status appraisal summary on the Desert Nightsnake Hypsiglena chlorophaea in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. xiii pp.

Recovery and Management Plans

B.C. Ministry of Environment. Recovery Planning in BC. B.C. Minist. Environ. Victoria, BC.


Environment and Climate Change Canada. 2017l. Recovery Strategy for the Western Rattlesnake (Crotalus oreganus), the Great Basin Gophersnake (Pituophis catenifer deserticola) and the Desert Nightsnake (Hypsiglena chlorophaea) in Canada [Proposed]. Species at Risk Act Recovery Strategy Series. Environment and Climate Change Canada, Ottawa. Part 1, 28 pp., Part 2, A. 37 pp., B. 36 pp., C. 28 pp.


Southern Interior Reptile and Amphibian Recovery Team. 2008. Recovery strategy for the Night Snake (Hypsiglena torquata) in British Columbia. Prepared for the B.C. Ministry of Environment, Victoria, BC. 13 pp.


Southern Interior Reptile and Amphibian Working Group. 2016d. Recovery plan for the Desert Nightsnake (Hypsiglena chlorophaea) in British Columbia. Prepared for the B.C. Ministry of Environment, Victoria, BC. 28 pp.

Best Management Practices

Ovaska, K, S. Lennart, C Engelstoft, L. Matthias, E. Wind and J. MacGarvie. 2004. Best Management Practices for Amphibians and Reptiles in Urban and Rural Environments in British Columbia. Ministry of Water Land and Air Protection, Ecosystems Standards and Planning, Biodiversity Branch

Conservation Framework

Conservation Framework Website


Conservation Framework Report

Other Related References

Collins, J.T. 1997. Standard common and current scientific names for North American amphibians and reptiles. Society for the Study of Amphibians and Reptiles. Herpetol. Circular No. 25.


Diller, L.V., and R.L. Wallace. 1986. Aspects of the life history and ecology of the desert night snake, Hypsiglena torquata deserticola: Colubridae, in southwestern Idaho. Southwest. Nat. 31(1):55-64.


Goldberg, S.R. 2001. Reproduction in the Night Snake, Hypsiglena torquata (Serpentes: Colubridae), from Arizona. Texas J. Sci. 53(2): 107-114.


Gregory, L. 2005. COSEWIC status report on the night snake Hypsiglena torquata in Canada. in COSEWIC assessment and status report on the night snake Hypsiglena torquata in Canada. Comm. on the Status of Endangered Wildl. in Can.. Ottawa. 25pp. In press.


Gregory, P.T., and R.W. Campbell. 1984. The Reptiles of British Columbia. Royal B.C. Mus. Handb. 102pp.


Lacey, H., C.H. Shewchuck, P.T. Gregory, M.J. Sarell, and L.P. Gregory. 1996. The occurrence of the Night Snake, Hypsiglena torquata, in British Columbia, with comments on its bodysize and diet. Can. Field-Nat. 110:620-625.


Orchard, S.A. 1988. Species Notes for Reptiles. Vol. 3 in A.P. Harcombe, tech. ed. 1988. B.C. Minist. Environ., Lands and Parks, Wildl. Branch. 44pp.


Sarell, M. 2005b. Unpublished georeferenced observations of the Desert Night Snake (Hypsiglena torquata deserticola) in British Columbia. Excel 2000 database.


Sarell, M. 2005c. In Progress. Night Snake (Hypsiglena torquata) in Standards for Managing Identified Wildlife: Accounts, Volume 3. Biodiversity Branch, B.C. Minist. Water, Land, and Air Prot., Victoria.


St. John, A. 2002. Reptiles of the northwest: British Columbia to California. Lone Pine Publishing, Washington, USA.


The Reptiles of British Columbia: Night Snake, Hypsiglena torquata deserticola. 2004. Univ. Coll of the Cariboo, and B.C. Minist. Water, Land and Air Prot. Online. Available:


Cross-Linked Information Resources (CLIR): an umbrella search web application that allows users to use a single window to simultaneously search six provincial environmental and natural resource information e-libraries and provides access to digital documents in these e-libraries.


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