Lithobates vibicarius
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~10% in a week ~20%
Lithobates vibicarius, commonly known as either green-eyed frog (after its green eyes) or Rancho Redondo frog (after its type locality in Costa Rica), is a species of frog in the family Ranidae from highland rainforests in Costa Rica and western Panama.
Lithobates vibicarius are relatively large frogs, 6–9 cm (2.4–3.5 in) in snout–vent length. Dorsal colouration is variable: golden, greenish, or dull brown; juveniles are usually green. There are at least some darker markings on the dorsum of most individuals. The dorsolateral folds typically have black linings on the outer edges. A black face mask is typical. The upper lip has white lining. The iris is green. Feet are extensively webbed.
Breeding may occur throughout the year but is concentrated to the early parts of the rainy season. Calling and mating take place at night. Males generally call from vegetation in water. The call is a low, harsh trill. Eggs are laid in large, round gelatinous masses in shallow bodies of water, attached to the vegetation.
Lithobates vibicarius is a semi-aquatic frog found in lower montane and lower portions of montane rainforest. They... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Poás Volcano National Park | 🇨🇷 Costa Rica | |
| 2 | Braulio Carrillo National Park | 🇨🇷 Costa Rica |
Rare
Under 5% of wildlife watchers report a Rana Montanera sighting in Braulio Carrillo National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 46th most-seen of the 46 amphibians we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
September and October
In those months about 10% of wildlife watchers report a Rana Montanera in Braulio Carrillo National Park on a given day, against under 5% in November to August, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Rana Montanera sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Rana Montanera sightings, Braulio Carrillo National Park ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Poás Volcano National Park (Costa Rica, under 5%).
Same genus: Lithobates
The closest relatives of the Rana Montanera that you can see in Braulio Carrillo National Park (genus Lithobates, American Water Frogs) are Warszewitsch's Frog (about 30%) and Vaillant's Frog (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rana Montanera is recorded against all the amphibians logged in Braulio Carrillo 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.
