Great Plains Ground Snake vs. Southwestern Blackhead Snake
Both are small, plain-bodied snakes of rocky slopes and canyons, found under rocks; they share 17 one-degree squares in Texas and New Mexico. A: No black cap: the head is the colour of the body in the Great Plains Ground Snake; a flat black cap, usually with no pale collar behind it in the Southwestern Blackhead Snake. B: Plain whitish in the Great Plains Ground Snake; an orange-red stripe down the middle in the Southwestern Blackhead Snake.
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