Drymarchon corais
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~30% in a week ~50%
The indigo snake (Drymarchon corais), also known as the yellow-tail cribo, is a species of snake in the family Colubridae. This large colubrid snake is nonvenomous. Until recently, all Drymarchon were classified as subspecies of D. corais. However, North and Central populations are now assigned to different species (D. melanurus, D. couperi and D. kolpobasileus), and D. caudomaculatus and D. margaritae are recognised as separate species in South America.
This snake is found in South America, including Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname and Venezuela as well as Trinidad and Tobago. The species forages on the ground, sometimes climbing low vegetation. It feeds on a variety of prey species including fish, frogs, reptiles, reptile eggs, mammals, birds and bird eggs.
Species Drymarchon corais at The Reptile Database Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tambopata National Reserve | 🇵🇪 Peru |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Yellow-tailed Indigo Snake sighting in Tambopata National Reserve on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 38th most-seen of the 47 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.
June and December–January
In those months about 20% of wildlife watchers report a Yellow-tailed Indigo Snake in Tambopata National Reserve on a given day, against under 5% in February–May, July and September–October, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Yellow-tailed Indigo Snake 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 Tambopata National Reserve, in our data
Tambopata National Reserve is the only park on Wallace's Line with enough records to rate Yellow-tailed Indigo Snake sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Colubridae
The closest relatives of the Yellow-tailed Indigo Snake that you can see in Tambopata National Reserve (family Colubridae, Colubrid Snakes) are Blunthead Tree Snake (about 30%), Tschudi's False Coral Snake (about 20%) and Wucherer's Ground Snake (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow-tailed Indigo Snake is recorded against all the reptiles logged in Tambopata National Reserve (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.
