Drepanoides anomalus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~50%
Drepanoides is a genus of snake in the family Colubridae that contains the sole species Drepanoides anomalus. It is commonly known as the black-collared snake. It is found in South America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yasuní National Park | 🇪🇨 Ecuador | |
| 2 | Tambopata National Reserve | 🇵🇪 Peru | |
| 3 | Manu National Park | 🇵🇪 Peru |
With luck
About 10% of wildlife watchers report a Black-collared Snake sighting in Yasuní National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 39th most-seen of the 49 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
April
In that month about 30% of wildlife watchers report a Black-collared Snake in Yasuní National Park on a given day, against under 5% in May–July and September–February, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Black-collared Snake sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 3 parks where we can rate Black-collared Snake sightings, Yasuní National Park has the highest daily chance: about 10%. Next come Tambopata National Reserve (Peru, about 10%) and Manu National Park (Peru, about 10%).
Same family: Colubridae
The closest relatives of the Black-collared Snake that you can see in Yasuní National Park (family Colubridae, Colubrid Snakes) are Blunthead Tree Snake (about 30%), Diurnal Vine Snake (about 20%) and Catesby's Snail-eater (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black-collared Snake is recorded against all the reptiles logged in Yasuní National Park (7 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.
