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Sierra Garter Snake vs. Common Garter Snake

Both are garter snakes of the Sierra Nevada foothills and valleys; their records overlap. A: A faint, short or missing stripe on a checkerboard in the Sierra Garter Snake; a bold yellow or orange stripe in the Common Garter Snake. B: Olive or brown, no red in the Sierra Garter Snake; often red bars or blotches in the Common Garter Snake.

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Sierra Garter Snake

Thamnophis couchii

Common Garter Snake

Thamnophis sirtalis
Sierra Garter Snake vs. Common Garter Snake: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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