Coniophanes fissidens
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~40%
Coniophanes fissidens, the yellowbelly snake, is a species of snake in the family Colubridae. The species is native to Mexico, Guatemala, Honduras, Belize, Nicaragua, El Salvador, Costa Rica, Panama, Ecuador, Peru, and Colombia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pico Bonito National Park | 🇭🇳 Honduras | |
| 2 | Carara National Park | 🇨🇷 Costa Rica | |
| 3 | Corcovado National Park | 🇨🇷 Costa Rica | |
| 4 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 5 | Arenal Volcano National Park | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report a Yellowbelly Snake sighting in Corcovado National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 37th most-seen of the 41 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.
September and December
In those months about 20% of wildlife watchers report a Yellowbelly Snake in Corcovado National Park on a given day, against under 5% in February–June, August and October–November, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Yellowbelly Snake sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
3rd of 5
Of the 5 parks where we can rate Yellowbelly Snake sightings, Corcovado National Park ranks 3rd at about 10%. The best odds are in Pico Bonito National Park (Honduras, about 30%) and Carara National Park (Costa Rica, about 10%).
Same family: Colubridae
The closest relatives of the Yellowbelly Snake that you can see in Corcovado National Park (family Colubridae, Colubrid Snakes) are Ornate Cat-eyed Snake (about 30%), Puffing Snake (about 20%) and Chicken Snake (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellowbelly Snake is recorded against all the reptiles logged in Corcovado National Park (5 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.
