Sympetrum vulgatum
In 3 days ~50% in a week ~80%
The vagrant darter, or moustached darter, (Sympetrum vulgatum) is a European dragonfly. The species takes its English name from its habit of occasionally appearing as a rare vagrant north of its normal range. However, it is likely to be under-recorded because it is very similar to the common darter (S. striolatum).
The species is common in central and northeast Europe. It breeds in standing water. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Biebrza National Park | 🇵🇱 Poland | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Wadden Sea National Park | 🇩🇪 Germany | |
| 4 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Astana | 🇰🇿 Kazakhstan | |
| 3 | Warsaw | 🇵🇱 Poland | |
| 4 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 5 | Moscow | 🇷🇺 Russia | |
| 6 | Saint Petersburg | 🇷🇺 Russia | |
| 7 | Stockholm | 🇸🇪 Sweden | |
| 8 | Kazan | 🇷🇺 Russia | |
| 9 | Novosibirsk | 🇷🇺 Russia | |
| 10 | Nizhny Novgorod | 🇷🇺 Russia |
Possible
About 20% of wildlife watchers report a Vagrant Darter sighting in Biebrza National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 52nd most-seen of the 97 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.
September
In that month about 50% of wildlife watchers report a Vagrant Darter in Biebrza National Park on a given day, against under 5% in March–June and October, the lowest months. December has too few records to rate.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Vagrant Darter sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 parks where we can rate Vagrant Darter sightings, Biebrza National Park has the highest daily chance: about 20%. Next come Bavarian Forest National Park (Germany, about 10%) and Wadden Sea National Park (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Vagrant Darter is recorded against all the insects logged in Biebrza National Park (7 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.
