Northwestern Gartersnake

At a glance

Northwestern Gartersnake (Thamnophis ordinoides) is an IUCN Least Concern reptile with specific harvest rules tracked in 1 of 66 jurisdictions covered by CatchRules.

Confirmed by 13,619 research-grade iNaturalist observations, with Oregon, Washington, and British Columbia the top jurisdictions by observation count.

Notable details

• One of the smallest gartersnakes, rarely exceeding 26 inches in total length.
• Found exclusively in the Pacific Northwest, from British Columbia south to northern California.
• Slugs and earthworms make up the bulk of its diet.
• Gives birth to live young, usually 3–12 per litter.
• Hides under logs, rocks, or debris in moist coastal forests and meadows.

Where Northwestern Gartersnake are seen

• Oregon5,557 iNat obs
• Washington4,093 iNat obs
• British Columbia3,838 iNat obs
• California131 iNat obs

Background

The northwestern garter snake (Thamnophis ordinoides) is a species of colubrid snake endemic to North America.

Background excerpt adapted from Wikipedia's Northwestern Gartersnake article (CC BY-SA). Visit Wikipedia for the full entry.

Other reptiles on CatchRules

• North American RacerColuber constrictor
• Northern Alligator LizardElgaria coerulea
• Northern Rubber BoaCharina bottae