Species: Thamnophis ordinoides
Northwestern Gartersnake
Species
Encyclopedia of Puget Sound
Classification
Kingdom
Animalia
Phylum
Craniata
Class
Reptilia
Order
Squamata
Family
Colubridae
Genus
Thamnophis
NatureServe
Classification
Other Global Common Names
Northwestern Garter Snake - couleuvre du Nord-Ouest
Informal Taxonomy
Animals, Vertebrates - Reptiles - Snakes
Formal Taxonomy
Animalia - Craniata - Reptilia - Squamata - Colubridae - Thamnophis
Ecology and Life History
Migration
true - true - false
Non-migrant
true
Locally Migrant
true
Food Comments
Feeds mainly on slugs as well as worms, salamanders and frogs.
Reproduction Comments
Copulates usually in the spring, less commonly in the fall (Nussbaum et al. 1983). Viviparous. Parturition occurs in summer or early fall. Litter size generally less than 20.
Length
66
Conservation Status
NatureServe Global Status Rank
G5
Global Status Last Reviewed
2006-09-07
Global Status Last Changed
2001-12-11
Distribution
Conservation Status Map
<img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.BC=S4&US.CA=SNR&US.OR=S5&US.WA=S5" alt="Conservation Status Map" style="width: 475px; height: auto;" />
Global Range
G - 200,000-2,500,000 square km (about 80,000-1,000,000 square miles) - G - The range includes southwestern British Columbia, western Washington, western Oregon, and extreme northwestern California, including various coastal islands, at elevations from sea level to around 1,680 meters (5,500 feet) (Nussbaum et al. 1981, Brown et al. 1995, Rossman et al. 1996, Ernst and Ernst 2003, Stebbins 2003).
Global Range Code
G
Global Range Description
200,000-2,500,000 square km (about 80,000-1,000,000 square miles)