Scincella caudaequinae
Silhouette: David Orr · PhyloPic
In 3 days ~10% in a week ~30%
Scincella caudaequinae, commonly known as the Horsetail Falls ground skink, is a species of reptile in the family Scincidae that is endemic to Mexico. It was named for the type locality "Horsetail Falls, 25 miles south of Monterrey, Nuevo, Leon". Scincella caudaequinae occurs in the northern Sierra Madre Oriental in Nuevo Leon, San Luis Potosi, southeast Coahuila, and Tamaulipas. It was considered a subspecies of Scincella silvicola for many decades. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Horsehead Ground Skink sighting in Cumbres de Monterrey National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 40th most-seen of the 43 reptiles we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
April–May and October
In those months about 10% of wildlife watchers report a Horsehead Ground Skink in Cumbres de Monterrey National Park on a given day, against under 5% in June–September and November–March, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Horsehead Ground Skink sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Cumbres de Monterrey National Park, in our data
Cumbres de Monterrey National Park is the only park on Wallace's Line with enough records to rate Horsehead Ground Skink sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Horsehead Ground Skink is recorded against all the reptiles logged in Cumbres de Monterrey National Park (6 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
