Lithobates forreri
Silhouette: Jose Carlos Arenas-Monroy · PhyloPic
In 3 days ~50% in a week ~80%
Forrer's grass frog or Forrer's leopard frog (Lithobates forreri) is a species of frog in the family Ranidae found in Mexico and Central America through Guatemala, El Salvador, Honduras, and Nicaragua to Costa Rica. It is a widespread and common frog found in lowland and seasonal tropical forests. It can also adapt to man-made habitats such as flooded agricultural lands and other water content systems. Reproduction requires permanent pools and lagoons.
Hillis D.M., Frost J.S., Wright D.A. (1983). "Phylogeny and biogeography of the Rana pipiens complex: A biochemical evaluation". Systematic Zoology. 32 (2): 132–143. doi:10.2307/2413277. JSTOR 2413277.{{cite journal}}: CS1 maint: multiple names: authors list (link)
Hillis D.M. (1988). "Systematics of the Rana pipiens complex: Puzzle and paradigm". Annual Review of Ecology and Systematics. 19: 39–63. doi:10.1146/annurev.es.19.110188.000351. Hillis D.M., Wilcox T.P. (2005). "Phylogeny of the New World true frogs (Rana)" (PDF). Molecular Phylogenetics and Evolution. 34 (2): 299–314. doi:10.1016/j.ympev.2004.10.007. PMID 15619443. Archived from the original (PDF) on 2008-05-28.
Hillis D. M. (2007). "Constraints in naming... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Santa Rosa National Park | 🇨🇷 Costa Rica | |
| 2 | Palo Verde National Park | 🇨🇷 Costa Rica | |
| 3 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 4 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 5 | Carara National Park | 🇨🇷 Costa Rica | |
| 6 | Arenal Volcano National Park | 🇨🇷 Costa Rica |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Monteverde Theme Park | 🇨🇷 Costa Rica |
Possible
About 20% of wildlife watchers report a Forrer's Grass Frog sighting in Palo Verde National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 10th most-seen of the 12 amphibians 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.
August
In that month about 50% of wildlife watchers report a Forrer's Grass Frog in Palo Verde National Park on a given day, against under 5% in April–May, July, September and November–February, the lowest months. That is one of Palo Verde National Park's wettest months, with about 300 mm of rain against almost none in February.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Forrer's Grass Frog sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 6
Of the 6 parks where we can rate Forrer's Grass Frog sightings, Palo Verde National Park ranks 2nd at about 20%. The best odds are in Santa Rosa National Park (Costa Rica, about 30%).
Same order: Anura
The closest relatives of the Forrer's Grass Frog that you can see in Palo Verde National Park (order Anura, Frogs and Toads) are Stauffer's Tree Frog (about 50%), Mexican Smilisca (about 50%) and Giant Marine Toad (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Forrer's Grass Frog is recorded against all the amphibians logged in Palo Verde National Park (10 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.
