Imantodes inornatus
Silhouette: PhyloPic
In 3 days ~50% in a week ~80%
Imantodes inornatus, the western tree snake, is a species of colubrid snake native to Central America. It can be found from Guatemala to Ecuador. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 2 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 3 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 4 | Gandoca-Manzanillo Wildlife Refuge | 🇨🇷 Costa Rica | |
| 5 | Manuel Antonio National Park | 🇨🇷 Costa Rica | |
| 6 | Soberanía National Park | 🇵🇦 Panama |
Possible
About 20% of wildlife watchers report a Western Tree Snake sighting in Braulio Carrillo National Park on a given day, based on 46 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 20th most-seen of the 57 reptiles we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
March, May, July and September–November
In those months about 30% of wildlife watchers report a Western Tree Snake in Braulio Carrillo National Park on a given day, against under 5% in April, August and December–February, the lowest months.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Western Tree Snake sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 6 parks where we can rate Western Tree Snake sightings, Braulio Carrillo National Park has the highest daily chance: about 20%. Next come Tenorio Volcano National Park (Costa Rica, about 20%) and Arenal Volcano National Park (Costa Rica, about 10%).
GBIF citizen-science records
It is estimated from how often the Western Tree Snake is recorded against all the reptiles logged in Braulio Carrillo National Park (46 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.
