Erebia tyndarus
In 3 days ~50% in a week ~80%
Erebia tyndarus, the Swiss brassy ringlet, is a European brush-footed butterfly species of the subfamily Satyrinae. The Swiss brassy ringlet belongs to the brassy ringlet group of its genus Erebia. These are found in taiga and alpine habitat across Eurasia, with one population in comparatively recent times colonizing North America. The brassy ringlet group, like many Erebia, has a complicated taxonomy, with scores of "variants" having been named in the late 19th and early 20th century. Most of these in fact were simply aberrations, local or seasonal forms. As this was realized, the brassy ringlets of the Alps and Pyrenees were united in E. tyndarus, either as a superspecies or as a species.
In recent times, this question has been restudied, including the DNA sequence data available nowadays. The view that only a single species of this non-migratory butterfly with restricted habitat preferences occurs in far-flung localities like the Sierra Nevada of southern Spain or the Julian Alps of Slovenia is generally considered obsolete.
Rather, it seems that quite a few proper species are involved. The Swiss brassy ringlet in particular is part of a... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Aigüestortes National Park | 🇪🇸 Spain | |
| 2 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Triglav National Park | 🇸🇮 Slovenia | |
| 5 | Rocky Mountain National Park | 🇺🇸 United States | |
| 6 | Cévennes National Park | 🇫🇷 France | |
| 7 | Yellowstone National Park | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Swiss Brassy Ringlet sighting in Aigüestortes National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 73rd most-seen of the 256 insects 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.
July
In that month about 30% of wildlife watchers report a Swiss Brassy Ringlet in Aigüestortes National Park on a given day, against under 5% in February–June and October–November, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Swiss Brassy Ringlet sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 7 parks where we can rate Swiss Brassy Ringlet sightings, Aigüestortes National Park has the highest daily chance: about 20%. Next come Sierra Nevada National Park (Spain, about 10%) and Pyrénées National Park (France, about 10%).
Same genus: Erebia
The closest relatives of the Swiss Brassy Ringlet that you can see in Aigüestortes National Park (genus Erebia, Alpines) are Piedmont Ringlet (about 40%), Autumn Ringlet (about 30%) and Bright Eyed Ringlet (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Swiss Brassy Ringlet is recorded against all the insects logged in Aigüestortes National Park (17 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.
