Xenochrophis trianguligerus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~70% in a week ~90%
The triangle keelback (Xenochrophis trianguligerus) is a species of snake found in Brunei Darussalam, Burma (Myanmar), Cambodia, India (Nicobar Islands; Arunachal Pradesh (Deban - Changlang district)), Indonesia (Nias, Mentawai, Sumatra, Laos, Malaysia (Malaya and East Malaysia), Singapore, Thailand, and Vietnam.
The type locality is Java. Friedrich Boie 1827 Bemerkungen über Merrem's Versuch eines Systems der Amphibien, 1. Lieferung: Ophidier. Isis van Oken, Jena, 20: 508–566. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Khao Luang National Park | 🇹🇭 Thailand | |
| 3 | Bako National Park | 🇲🇾 Malaysia | |
| 4 | Khao Sok National Park | 🇹🇭 Thailand | |
| 5 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 6 | Kinabalu Park | 🇲🇾 Malaysia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jakarta | 🇮🇩 Indonesia | |
| 2 | Bandung | 🇮🇩 Indonesia | |
| 3 | Kuala Lumpur | 🇲🇾 Malaysia |
Possible
About 30% of wildlife watchers report a Triangle Keelback sighting in Danum Valley Conservation Area on a given day, based on 23 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 8th most-seen of the 35 reptiles we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
March and September
In those months about 50% of wildlife watchers report a Triangle Keelback in Danum Valley Conservation Area on a given day, against under 5% in April and December–January, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Triangle Keelback sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 6 parks where we can rate Triangle Keelback sightings, Danum Valley Conservation Area has the highest daily chance: about 30%. Next come Khao Luang National Park (Thailand, about 30%) and Bako National Park (Malaysia, about 30%).
Same family: Colubridae
The closest relatives of the Triangle Keelback that you can see in Danum Valley Conservation Area (family Colubridae, Colubrid Snakes) are Gray Bronzeback (about 40%), Paradise Flying Snake (about 30%) and Dog-toothed Cat Snake (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Triangle Keelback is recorded against all the reptiles logged in Danum Valley Conservation Area (23 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.
