Acronicta alni
In 3 days ~10% in a week ~30%
Acronicta alni, the alder moth, is a moth of the family Noctuidae. It is found in Europe (from southern Fennoscandia to Spain, Italy and the Balkans), Turkey, the European part of Russia and the neighbouring countries, the Caucasus, the Ural, southern Siberia, Transbaikalia, the Russian Far East (Primorye, Sakhalin, southern Kuriles, Khabarovsk and the Amur region), China, Japan (Hokkaido and Honshu) and the Korean Peninsula. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan | |
| 2 | Triglav National Park | 🇸🇮 Slovenia | |
| 3 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 5 | Cévennes National Park | 🇫🇷 France | |
| 6 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | Essen | 🇩🇪 Germany | |
| 4 | Moscow | 🇷🇺 Russia | |
| 5 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report an Alder Moth sighting in Essen on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 316th most-seen of the 434 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
July and August
In those months about 10% of wildlife watchers report an Alder Moth in Essen on a given day, against under 5% in September to June, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Alder Moth sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
3rd of 5
Of the 5 cities where we can rate Alder Moth sightings, Essen ranks 3rd at under 5%. The best odds are in Helsinki (Finland, about 10%) and Birmingham (United Kingdom, under 5%).
Same genus: Acronicta
The closest relatives of the Alder Moth that you can see in Essen (genus Acronicta, Dagger Moths) are Sycamore Moth (about 10%) and Knot Grass Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Alder Moth is recorded against all the insects logged in Essen (8 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.
