Pararge petropolitana
In 3 days ~30% in a week ~50%
Lasiommata petropolitana, the northern wall brown, is a butterfly species belonging to the family Nymphalidae. It can be found in large parts of Europe, from the Pyrenees and Alps up to Scandinavia and Finland, east to Russia and Siberia.
The males are 19–21 mm. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hohe Tauern National Park | 🇦🇹 Austria | |
| 2 | Vanoise National Park | 🇫🇷 France | |
| 3 | Mercantour National Park | 🇫🇷 France | |
| 4 | Ecrins National Park | 🇫🇷 France | |
| 5 | Triglav National Park | 🇸🇮 Slovenia | |
| 6 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Northern Wall Brown sighting in Ecrins National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 135th most-seen of the 251 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
May
In that month about 30% of wildlife watchers report a Northern Wall Brown in Ecrins National Park on a given day, against under 5% in July to April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Northern Wall Brown sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 6
Of the 6 parks where we can rate Northern Wall Brown sightings, Ecrins National Park ranks 4th at about 10%. The best odds are in Hohe Tauern National Park (Austria, about 20%), Vanoise National Park (France, about 20%) and Mercantour National Park (France, about 20%).
Same genus: Pararge
The closest relatives of the Northern Wall Brown that you can see in Ecrins National Park (genus Pararge) are Large Wall Brown (about 20%) and Speckled Wood (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Northern Wall Brown is recorded against all the insects logged in Ecrins 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.
