Sonora episcopa
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~30% in a week ~60%
Sonora episcopa, the ground snake, is a species of snake of the family Colubridae. The snake is found 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.
With luck
About 10% of wildlife watchers report a Great Plains Ground Snake sighting in Big Bend National Park on a given day, based on 25 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 31st most-seen of the 48 reptiles we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Great Plains Ground Snake in Big Bend National Park on a given day, against under 5% in August and October–February, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Great Plains Ground Snake 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 Big Bend National Park, in our data
Big Bend National Park is the only park on Wallace's Line with enough records to rate Great Plains Ground Snake sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Great Plains Ground Snake is recorded against all the reptiles logged in Big Bend National Park (25 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.
