Clossiana euphrosyne
The pearl-bordered fritillary is a butterfly of the family Nymphalidae found in Europe and through Russia across the Palearctic to the north of Kazakhstan. Source
Where it is now
No records in the last 8 weeks. It may be out of season where the observers and sensors are.
See the Clossiana euphrosyne on the live map
Movement and weather
Each season it is first heard regularly where daytime highs are around 18°C (typically 14 to 19°C, from 5 areas).
Over the weeks it was present in the past year, its centre in Europe ranged from 52°N in May to 67°N in July, about 1,700 km apart.
Arrival dates
The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.
| Region | First arrival | Last arrival | Typical peak | Areas |
|---|---|---|---|---|
| Europe | 4 May 2026 | 18 May 2026 | 8 June 2026 | 5 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.