Crotaphytus nebrius
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~10% in a week ~20%
The Sonoran collared lizard (Crotaphytus nebrius) is a species of lizard in the family Crotaphytidae. The species is endemic to the U.S. state of Arizona and the Mexican state of Sonora. C. nebrius is a grayish-yellow with grayish-white spots, which are large down the middle of the body, and small on the sides.They are also known for having a set of black stripes on their neck, and may also have red-orange markings on their neck.
Adults of C. nebrius are primarily active during spring and summer; the juveniles can be active until November. C. nebrius is oviparous. A wide variety of animals prey upon this species, including roadrunners, coyotes, bobcats, domestic cats, foxes and raptors.
Axtell, Ralph W.; Montanucci, Richard R. (1977). "Crotaphytus collaris from the eastern Sonoran Desert: description of a previously unrecognized geographic race". Natural History Miscellanea, Chicago Academy of Sciences (201): 1–8. (Crotaphytus collaris nebrius, new subspecies).
McGuire, Jimmy A. (1996). "Phylogenetic Systematics of Crotaphytid Lizards (Reptilia: Iguania: Crotaphytidae)". Bulletin... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Saguaro National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Arizona-Sonora Desert Museum | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Sonoran Collared Lizard sighting in Saguaro National Park on a given day, based on 19 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 51st most-seen of the 51 reptiles we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
May
In that month about 10% of wildlife watchers report a Sonoran Collared Lizard in Saguaro National Park on a given day, against under 5% in June to April, the lowest months. That is one of Saguaro National Park's driest months, with almost no rain against 55 mm in July.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Sonoran Collared Lizard sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Saguaro National Park, in our data
Saguaro National Park is the only park on Wallace's Line with enough records to rate Sonoran Collared Lizard sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Sonoran Collared Lizard is recorded against all the reptiles logged in Saguaro National Park (19 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.
