Iberian Frog

Iberian Frog

Rana iberica

Silhouette: Sharp Photography, sharpphotography.co.uk · PhyloPic

LCNTVUVulnerableENCR
Daily sighting probability ~20% · Possible
at Sierra de Guadarrama National Park

In 3 days ~40% in a week ~70%

110 Verified sightings at Sierra de Guadarrama National Park From 2019 to 2026
117 In all 2 parks
July Best month
🌅 Crepuscular When it's spotted

About the Iberian Frog

The Iberian frog (Rana iberica), also known as Iberian stream frog, is a species of frog in the family Ranidae found in Portugal and Spain. Its natural habitats are rivers, mountain streams and swamps. It is threatened by habitat loss, introduced species, climate change, water contamination, and increased ultraviolet radiation.

The Iberian frog can grow to about 7 cm (2.8 in) in length but a more normal size is 5 cm (2.0 in). Females tend to be larger than males. The tympanum can be seen just behind the eye and is about half its size in diameter. From the side of the head to the groin is a distinct ridge, the dorsolateral fold, which distinguishes this species from the common frog. The skin is smooth with fine granulations. The colour is very variable, being mainly olive, reddish or greyish-brown, sometimes with darker markings. A dark streak runs between the nostril and the eye, and a thin, white line marks the upper lip. The hind legs are sometimes barred with dark brown. The hind feet are more completely webbed than the common frog. The underside is pale, sometimes with darker spots, but the centre of the throat is not spotted.

The Iberian frog has a distinctive... Wikipedia →

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Sierra de Guadarrama National Park 🇪🇸 Spain
~20%
2 Picos de Europa National Park 🇪🇸 Spain
~10%

Cities Where Found

# City Country Daily sighting probability
1 Porto 🇵🇹 Portugal
~10%

Before you go

What are the chances of seeing an Iberian Frog in Sierra de Guadarrama National Park?

Possible

About 20% of wildlife watchers report an Iberian Frog sighting in Sierra de Guadarrama National Park on a given day, based on 110 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 3rd most-seen of the 13 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.

When is the best time to see an Iberian Frog in Sierra de Guadarrama National Park?

June to August

In those months about 30% of wildlife watchers report an Iberian Frog in Sierra de Guadarrama National Park on a given day, against under 5% in January to March, the lowest months. Those are among Sierra de Guadarrama National Park's driest months, with about 35 mm of rain a month against 110 mm in November.

What time of day is best to see an Iberian Frog?

Between 5 and 8 pm

Across all the parks we cover, that three-hour window holds the most Iberian Frog sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is most active around dawn and dusk.

Is Sierra de Guadarrama National Park the best place to see an Iberian Frog?

Yes

Of the 2 parks where we can rate Iberian Frog sightings, Sierra de Guadarrama National Park has the highest daily chance: about 20%. Next come Picos de Europa National Park (Spain, about 10%).

Where does the Iberian Frog sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Iberian Frog is recorded against all the amphibians logged in Sierra de Guadarrama National Park (110 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.

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