Southwestern Pond Turtle vs. Northwestern Pond Turtle

Split on genetics; the two look the same and meet around San Francisco Bay. Range decides. A: Olive, flecked dark, no stripes in the Southwestern Pond Turtle; the same in the Northwestern Pond Turtle. B: Low, plain olive or brown with fine flecks in the Southwestern Pond Turtle; the same in the Northwestern Pond Turtle. South of about San Francisco Bay it is the Southwestern; north of it, the Northwestern.

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

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