Tantilla gracilis
In 3 days ~30% in a week ~50%
Tantilla gracilis (flathead snake) is a species of snake of the family Colubridae. The snake is found in the US states of Missouri, Texas, Kansas, Illinois, Oklahoma, Louisiana and Arkansas and in Mexico. The flathead snake is a small snake with adults growing to 18–20 cm (7–8 in).
They feed on arthropods such as centipedes. Species Tantilla gracilis at The Reptile Database Flathead snake at the Illinois Natural History Survey Reptile and Amphibian Collection Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | San Antonio | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Flat-headed Snake sighting in Austin on a given day, based on 222 verified sightings from GBIF citizen-science data. It is the 16th most-seen of the 37 reptiles we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
March and April
In those months about 20% of wildlife watchers report a Flat-headed Snake in Austin on a given day, against under 5% in August and November, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Flat-headed Snake sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate Flat-headed Snake sightings, Austin has the highest daily chance: about 10%. Next come San Antonio (United States, under 5%).
Same family: Colubridae
The closest relatives of the Flat-headed Snake that you can see in Austin (family Colubridae, Colubrid Snakes) are Plain-bellied Water Snake (about 30%), Western Rat Snake (about 30%) and Rough Earthsnake (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Flat-headed Snake is recorded against all the reptiles logged in Austin (222 verified sightings), 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.
