Eudonia mercurella
In 3 days ~20% in a week ~40%
Eudonia mercurella is a species of moth of the family Crambidae. It is found in Europe, western China, Iran, Lebanon, Turkey, and north-western Africa. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Mercantour National Park | 🇫🇷 France | |
| 4 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 5 | Pyrénées National Park | 🇫🇷 France | |
| 6 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 7 | Wadden Sea National Park | 🇩🇪 Germany | |
| 8 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom | |
| 3 | Dublin | 🇮🇪 Ireland | |
| 4 | Porto | 🇵🇹 Portugal | |
| 5 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 6 | Birmingham | 🇬🇧 United Kingdom | |
| 7 | Munich | 🇩🇪 Germany | |
| 8 | Berlin | 🇩🇪 Germany | |
| 9 | Manchester | 🇬🇧 United Kingdom | |
| 10 | Helsinki | 🇫🇮 Finland |
With luck
About 10% of wildlife watchers report a Small Grey sighting in Porto on a given day, based on 48 verified sightings from GBIF citizen-science data. It is the 140th most-seen of the 498 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
July and August
In those months about 20% of wildlife watchers report a Small Grey in Porto on a given day, against under 5% in September to May, the lowest months. Those are among Porto's driest months, with about 20 mm of rain a month against 140 mm in January.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Small Grey sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
4th of 18
Of the 18 cities where we can rate Small Grey sightings, Porto ranks 4th at about 10%. The best odds are in Liverpool (United Kingdom, about 20%), London (United Kingdom, about 10%) and Dublin (Ireland, about 10%).
GBIF citizen-science records
It is estimated from how often the Small Grey is recorded against all the insects logged in Porto (48 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.
