Tholera decimalis
In 3 days ~10% in a week ~20%
Tholera decimalis, the feathered Gothic, is a species of moth of the family Noctuidae. It is found in Europe and Scandinavia then through the Palearctic to Asia minor, western Central Asia, southern Siberia and in North Africa. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Feathered Gothic sighting in London on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 1300th most-seen of the 1504 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
September
In that month about 10% of wildlife watchers report a Feathered Gothic in London on a given day, against under 5% in October to August, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Feathered Gothic sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 6 cities where we can rate Feathered Gothic sightings, London ranks 5th at under 5%, level with the leaders once rounded. The best odds are in Helsinki (Finland, under 5%), Prague (Czechia, under 5%) and Berlin (Germany, under 5%).
Same family: Noctuidae
The closest relatives of the Feathered Gothic that you can see in London (family Noctuidae, Cutworm Moths and Allies) are Large Yellow Underwing (about 30%), Heart And Dart (about 20%) and Shuttle-Shaped Dart (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Feathered Gothic is recorded against all the insects logged in London (6 verified sightings), 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.
