Cosmia trapezina
In 3 days ~40% in a week ~60%
The dun-bar (Cosmia trapezina) is a moth of the family Noctuidae. It is a common Palearctic species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany | |
| 5 | Cévennes National Park | 🇫🇷 France | |
| 6 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Kharkiv | 🇺🇦 Ukraine | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Sofia | 🇧🇬 Bulgaria | |
| 5 | Birmingham | 🇬🇧 United Kingdom | |
| 6 | Manchester | 🇬🇧 United Kingdom | |
| 7 | Helsinki | 🇫🇮 Finland | |
| 8 | Kyiv | 🇺🇦 Ukraine | |
| 9 | Berlin | 🇩🇪 Germany | |
| 10 | Essen | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Dun-Bar sighting in Snowdonia National Park on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 106th most-seen of the 387 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Dun-Bar in Snowdonia National Park on a given day, against under 5% in October to June, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Dun-Bar sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 6 parks where we can rate Dun-Bar sightings, Snowdonia National Park has the highest daily chance: about 10%. Next come Bavarian Forest National Park (Germany, about 10%) and Pyrénées National Park (France, about 10%).
Same family: Noctuidae
The closest relatives of the Dun-Bar that you can see in Snowdonia National Park (family Noctuidae, Cutworm Moths and Allies) are Large Yellow Underwing (about 30%), Dark Arches (about 30%) and Flame Shoulder Moth (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dun-Bar is recorded against all the insects logged in Snowdonia National Park (21 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.
