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Mountain Skink vs. Great Plains Skink

Both live under rocks in the oak woodland and grassland of the southeastern sky islands. A: A wide dark brown stripe from the eye to the hind leg in the Mountain Skink; no stripe: a dark edge on each scale makes a net over the body in the Great Plains Skink. B: Bright blue, kept into adulthood in the Mountain Skink; tan or yellowish, like the body (only the black young have a blue tail) in the Great Plains Skink. C: Pale lines forming a Y on top of the head (young and many adults) in the Mountain Skink; no Y on the head in the Great Plains Skink. Size: the Mountain Skink is up to 3 in head and body; a Great Plains Skink reaches 5.6 in. Young Great Plains Skinks are jet black with a blue tail and white lip spots, and no side stripe.

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Mountain Skink

Plestiodon callicephalus

Great Plains Skink

Plestiodon obsoletus
Mountain Skink vs. Great Plains Skink: comparison sheet with the differences marked

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

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