Urotheca guentheri
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~30%
Urotheca guentheri, also known commonly as Günther's graceful brown snake and the striped glasstail, is a species of snake in the family Colubridae. The species is native to Central America. The specific name, guentheri, is in honor of German-born British herpetologist Albert Günther.
U. guentheri is found in Costa Rica, Honduras, Nicaragua, and Panama. The preferred natural habitat of U. guentheri is forest, at altitudes of 70–1,800 m (230–5,910 ft). Dorsally, U. guentheri is dark brown with white lines. Ventrally, it is reddish orange. It may attain a snout-to-vent length (SVL) of 19 in (48 cm).
U. guentheri preys predominately on frogs. U. guentheri is oviparous. Dunn ER (1938). "A New Rhadinaea from Central America". Copeia 1938 (4): 197–198. (Rhadinaea güntheri, replacement name for Tachymenis decipiens, p. 198).
Günther ACLG (1895). Biologia Centrali-Americana. Reptilia and Batrachia. London: Godman & Salvin. (Taylor and Francis, printers). 326 pp. + Plates 1–76. (Tachymenis decipiens, new species, p. 163 + Plate 53, figure a, two views)... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an Orange-bellied Glasstail sighting in Monteverde Cloud Forest Reserve on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 37th most-seen of the 43 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
May–June and December–January
In those months about 10% of wildlife watchers report an Orange-bellied Glasstail in Monteverde Cloud Forest Reserve on a given day, against under 5% in February–April and July–November, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Orange-bellied Glasstail sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Monteverde Cloud Forest Reserve, in our data
Monteverde Cloud Forest Reserve is the only park on Wallace's Line with enough records to rate Orange-bellied Glasstail sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Colubridae
The closest relatives of the Orange-bellied Glasstail that you can see in Monteverde Cloud Forest Reserve (family Colubridae, Colubrid Snakes) are Chicken Snake (about 10%), Green Rat Snake (about 10%) and Puffing Snake (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Orange-bellied Glasstail is recorded against all the reptiles logged in Monteverde Cloud Forest 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.
