Cydia amplana
In 3 days ~10% in a week ~30%
Cydia amplana, the rusty oak moth, is a moth of the family Tortricidae. It is found from northern, central and southern Europe to Asia Minor, south-western Russia and Transcaucasus. The wingspan is 16–20 mm. It often needs two years for development. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom | |
| 2 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 3 | Porto | 🇵🇹 Portugal |
Rare
Under 5% of wildlife watchers report a Vagrant Piercer sighting in Rotterdam [The Hague] on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 265th most-seen of the 355 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
In that month about 10% of wildlife watchers report a Vagrant Piercer in Rotterdam [The Hague] on a given day, against under 5% in August to June, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Vagrant Piercer sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 3 cities where we can rate Vagrant Piercer sightings, Rotterdam [The Hague] ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in London (United Kingdom, under 5%).
GBIF citizen-science records
It is estimated from how often the Vagrant Piercer is recorded against all the insects logged in Rotterdam [The Hague] (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.
