|Scientific Name:||Heterodon platirhinos|
|Species Authority:||Latreille, 1801|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Reviewer/s:||Cox, N., Chanson, J.S. & Stuart, S.N. (Global Reptile Assessment Coordinating Team)|
Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
|Range Description:||This species occurs widely in the united States, extending into southern Canada. Its range extends from southern New England through southern Ontario to Minnesota and South Dakota, and south to southern Texas, the Gulf Coast, and southern Florida (Conant and Collins 1991, Ernst and Ernst 2003).|
Native:Canada; United States
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||This species is represented by hundreds of occurrences (subpopulations). The adult population size is unknown but surely exceeds 100,000. This snake is fairly common in many parts of its range. The extent of occurrence, area of occupancy, number of subpopulations, and population size are probably relatively stable or declining at a rate of less than 10% over 10 years or three generations.|
|Habitat and Ecology:||Habitats include openly wooded upland hills, forest edges, fields, woodland meadows, prairies, forest-grassland ecotones, sand plains, barrier islands, fire-managed pinelands, river valleys, riparian zones, and various other habitats with loose soils and amphibian prey. This snake crawls on the surface and burrows into soil. It overwinters in burrows (made by mammal or self-dug) or under rocks of talus slopes. Eggs are laid in nests a few inches below the ground surface (Platt 1969) or in rotting wood (DeGraaf and Rudis 1983).|
|Major Threat(s):||No major threats are known. Locally, some populations have declined as a result of conversion of habitat to intensive human uses.|
|Conservation Actions:||Many occurrences are in protected areas.|
Bartlett, R D. and Bartlett, P.P. 1999. A Field Guide to Texas Reptiles and Amphibians. Gulf Publishing Company, Houston, Texas. xviii + 331 pp.
Conant, R. and Collins, J.T. 1991. A Field Guide to Reptiles and Amphibians: Eastern and Central North America. Third Edition. Houghton Mifflin Company, Boston, Massachusetts.
Dixon, J.R. 2000. Amphibians and Reptiles of Texas. With Keys, Taxonomic Synopses, Bibliography, and Distribution Maps. Second edition. Texas A & M University Press, College Station, College Station, Texas.
Ernst, C.H. and Ernst, E.M. 2003. Snakes of the United States and Canada. Smithsonian Books, Washington, D.C.
IUCN. 2007. 2007 IUCN Red List of Threatened Species. Available at: www.iucnredlist.org. (Accessed: 12th September 2007).
Mount, R.H. 1975. The Reptiles and Amphibians of Alabama. Auburn University Agricultural Experiment Station, Auburn, Alabama. vii + 347 pp.
|Citation:||Hammerson, G.A. 2007. Heterodon platirhinos. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 23 May 2013.|
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