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Plains Black-headed Snake vs. Flat-headed Snake

Both are small, plain tan snakes with smooth scales, found under rocks. A: the Plains Black-headed Snake has a sharp black cap from the snout back onto the neck, coming to a point behind, with no pale collar; the Flat-headed Snake's head is flattened and only slightly darker than the body. B: both have pink or orange down the middle of the belly.

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Plains Black-headed Snake

Tantilla nigriceps

Flat-headed Snake

Tantilla gracilis
Plains Black-headed Snake vs. Flat-headed 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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