Arctic Sulfur
Colias palaeno
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 Arctic Sulfur on the live map
Movement and weather
Each season it is first heard regularly where daytime highs are around 16°C (typically 15 to 19°C, from 6 areas).
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 | 1 June 2026 | 15 June 2026 | 22 June 2026 | 6 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.