Philodryas patagoniensis
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~60% in a week ~90%
Philodryas patagoniensis, also known as the Patagonia green racer, is a species of rear-fanged (opisthoglyphous) venomous snake in the family Colubridae. The species is endemic to cis-Andean South America from northern Argentina to northeastern Brazil; despite its name, most of its range is outside Patagonia.
P. patagoniensis is a medium-sized, cylindrical and robust snake, with a moderately long tail. It can grow to a maximum total length (including tail) of 150 cm (59 in). The snout is rounded. The eye is medium-sized with a round pupil. The dorsal scales are smooth with unique apical scores.
P. patagoniensis is terrestrial, fundamentally arboreal when foraging, and has daytime habits. It has a brownish color that helps in its camouflage. P. patagoniensis has sexual dimorphism in adult specimens. Females have a longer body, with greater corpulence, while males have a longer tail. Females are born with a greater rostro-cloacal length and reach sexual maturity later than males, about 2-years-old. Males can reach sexual maturity at 1-year-old. Reproduction is seasonal, with the vitellogenic season occurring between... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Serra da Canastra National Park | 🇧🇷 Brazil |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | São Paulo | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Patagonian Racer sighting in Serra da Canastra National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 5th most-seen of the 8 reptiles we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
August
In that month about 50% of wildlife watchers report a Patagonian Racer in Serra da Canastra National Park on a given day, against under 5% in May–July, September and December–March, the lowest months. That is one of Serra da Canastra National Park's driest months, with about 20 mm of rain against 280 mm in January.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Patagonian Racer 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 Serra da Canastra National Park, in our data
Serra da Canastra National Park is the only park on Wallace's Line with enough records to rate Patagonian Racer sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Patagonian Racer is recorded against all the reptiles logged in Serra da Canastra 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.
