Pelophylax ridibundus
Silhouette: T137 · PhyloPic
In 3 days ~40% in a week ~70%
The marsh frog (Pelophylax ridibundus) is a species of water frog native to Europe and parts of western Asia. The first scientific description of the marsh frog was published in 1771 and written by Prussian zoologist Peter Simon Pallas, who gave it the scientific name Rana ridibunda after collecting specimens of it during an expedition through the Russian Empire. Pallas did not precisely specify the type locality (where he found the frogs), only noting it as "versus mare Caspium; Volgae et Iaico" (opposite to the Caspian Sea, Volga, and on the Yaik River). A more precise location of "Gurjew" on the north coast of the Caspian Sea (now the city of Atyrau in Kazakhstan) was given in a 1928 publication written by German herpetologists Robert Mertens and Lorenz Müller. However, a 1994 paper by herpetologists Alain Dubois and Annemarie Ohler noted that because Pallas never designated a holotype specimen, a neotype needs to be selected for the species. The restriction of the type locality done by Mertens and Müller is therefore invalid unless a specimen from Atyrau is designated as the neotype, which Dubois and Ohler suggest should be done... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Plitvice Lakes National Park | 🇭🇷 Croatia | |
| 2 | Hortobágy National Park | 🇭🇺 Hungary | |
| 3 | Cévennes National Park | 🇫🇷 France |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Paris Zoological Park | 🇫🇷 France | |
| 2 | Aquarium du palais de la Porte Dorée | 🇫🇷 France | |
| 3 | Zoo d'Amiens | 🇫🇷 France | |
| 4 | Knuthenborg Safaripark | 🇩🇰 Denmark | |
| 5 | Zoo de La Flèche | 🇫🇷 France | |
| 6 | Ljubljana Zoo | 🇸🇮 Slovenia | |
| 7 | Schönbrunn Zoo | 🇦🇹 Austria | |
| 8 | Alpenzoo Innsbruck | 🇦🇹 Austria | |
| 9 | Animal - Bird Collection | 🇬🇷 Greece | |
| 10 | The Fenn Bell Conservation Project | 🇬🇧 United Kingdom | |
| 11 | Lake Tisza Ecocentre | 🇭🇺 Hungary |
Possible
About 20% of wildlife watchers report a Marsh Frog sighting in Prague on a given day, based on 171 verified sightings from GBIF citizen-science data. It is the 3rd most-seen of the 9 amphibians we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 30% of wildlife watchers report a Marsh Frog in Prague on a given day, against under 5% in November to February, the lowest months. That is one of Prague's wettest months, with about 80 mm of rain against 30 mm in February.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Marsh Frog sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
15th of 32
Of the 32 cities where we can rate Marsh Frog sightings, Prague ranks 15th at about 20%. The best odds are in Dushanbe (Tajikistan, about 60%), Antalya (Turkey, about 50%) and Jerusalem (Israel, about 40%).
Same family: Ranidae
The closest relatives of the Marsh Frog that you can see in Prague (family Ranidae, Typical Frogs) are Agile Frog (about 10%) and European Common Frog (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Marsh Frog is recorded against all the amphibians logged in Prague (171 verified sightings), 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.
