Sceloporus bimaculosus
Silhouette: SeismicShrimp · PhyloPic
In 3 days ~40% in a week ~80%
Sceloporus bimaculosus, the twin-spotted spiny lizard, is a species of lizard in the family Phrynosomatidae. It is found in New Mexico and Texas in the United States and Mexico. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Bend National Park | 🇺🇸 United States |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Twin-spotted Spiny Lizard sighting in Big Bend National Park on a given day, based on 40 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 20th most-seen of the 48 reptiles we can rate there. Over three days the chance rises to about 40%, and over a week to about 80%, if each day is a fresh chance.
September
In that month about 40% of wildlife watchers report a Twin-spotted Spiny Lizard in Big Bend National Park on a given day, against under 5% in November to February, the lowest months. That is one of Big Bend National Park's wettest months, with about 50 mm of rain against 10 mm in April.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Twin-spotted Spiny Lizard sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Big Bend National Park, in our data
Big Bend National Park is the only park on Wallace's Line with enough records to rate Twin-spotted Spiny Lizard sightings: about 20% of wildlife watchers there report one on a given day.
Same genus: Sceloporus
The closest relatives of the Twin-spotted Spiny Lizard that you can see in Big Bend National Park (genus Sceloporus, Spiny Lizards) are Canyon Lizard (about 30%), Crevice Spiny Lizard (about 30%) and Southwestern Fence Lizard (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Twin-spotted Spiny Lizard is recorded against all the reptiles logged in Big Bend National Park (40 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.
