Mokohinau Skink

Fascinating facts about the Mokohinau Skink

• In 2008 a team of four herpetologists formally named a tiny lizard that lives only on New Zealand’s offshore islands, honoring fellow scientist David Towns in its species name. This act of naming highlighted how even a handful of researchers can bring a hidden creature into the scientific spotlight.
• Measuring just 95 mm from snout to vent – about the length of a standard pencil – this skink packs a distinctive black-edged teardrop mark and alternating black-white stripes on its lower jaw, a pattern that lets field biologists spot it among leaf litter with a single glance.
• The skink’s entire known world stretches across a string of islands: Three Kings, Poor Knights, Hen and Chicken, Great Barrier, Little Barrier, and the Mokohinau group. Its confinement to these isolated habitats shows how island ecosystems can nurture species found nowhere else on the planet.
• Living on boulder-strewn beaches dotted with vines and scree, the lizard blends into a mosaic of rocks and leaf litter, illustrating how a species can carve out a niche in seemingly harsh, shifting terrain.
• Unlike many reptiles that lay eggs, this skink gives birth to live young and is thought to be active after dark, feeding mainly on insects but occasionally nibbling fruit – a reminder that even small lizards can adopt diverse survival strategies.

At a glance

About the Mokohinau Skink

The Mokohinau skink (Oligosoma townsi) is a sleek, medium-sized lizard that reaches a snout-vent length of up to 95 mm (3.7 in). Its most striking feature is a black-edged teardrop marking on the head, paired with a distinctive alternating black and white pattern along the lower jaw, setting it apart from its New Zealand relatives. Its body is slender and agile, built for darting among the tangled vines and leaf litter that carpet the boulder-strewn beaches of its island homes. By day it skulks in the shadows of broadleaf forest and low scrub, emerging at night to hunt the insects that form the core of its diet, though it will opportunistically nibble on fallen fruit when the chance arises. A surprising trait for a reptile, O. townsi gives birth to live young, a viviparous strategy that allows the newborns to develop safely within the mother’s body amid the unpredictable island climate. Scattered across the Three Kings, Poor Knights, Hen and Chicken, Great Barrier, Little Barrier, and Mokohinau Islands, this skink is a true island specialist. Its habitat, rocky beaches draped in vines, thick leaf litter, and loose scree, offers both refuge and foraging ground, while the low-light, nocturnal lifestyle reduces competition with diurnal lizards. Each night, the skink slips silently over moss-slick stones, its patterned jaw flashing briefly as it snaps up a beetle or moth, embodying the quiet resilience of New Zealand’s offshore fauna. The species’ limited distribution and specialized niche hint at a delicate balance that could tip with any change in its isolated ecosystems…

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