Pseudalsophis darwini
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~40%
Pseudalsophis darwini, otherwise known as Darwin's racer, is a species of snake of the family Colubridae. This species of snake is named after the famous naturalist Charles Darwin, who described many species in the Galapagos Islands and discovered the theory of evolution.
The snake is endemic to Fernandina Island and Isabela Island in the Galápagos Islands, as well as a small islet nearby, Isla Tortuga. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Galápagos Islands | 🇪🇨 Ecuador |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Darwin's Racer sighting in Galápagos Islands on a given day, based on 30 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 22nd most-seen of the 31 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
August
In that month about 20% of wildlife watchers report a Darwin's Racer in Galápagos Islands on a given day, against under 5% in January to May, the lowest months. That is one of Galápagos Islands's driest months, with almost no rain against 50 mm in March.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Darwin's 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 Galápagos Islands, in our data
Galápagos Islands is the only park on Wallace's Line with enough records to rate Darwin's Racer sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Pseudalsophis
The closest relatives of the Darwin's Racer that you can see in Galápagos Islands (genus Pseudalsophis, Galápagos and Elegant Racers) are Fernandina Racer (about 10%), Striped Galapagos Snake (about 10%) and Santa Cruz Racer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Darwin's Racer is recorded against all the reptiles logged in Galápagos Islands (30 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.
