Dysgonia algira
In 3 days ~20% in a week ~40%
Dysgonia algira, the passenger, is a moth of the family Noctuidae. The species was first described by Carl Linnaeus in 1767 and is found in the Palearctic - from the southern half of Europe and parts of North Africa through West, Central and South Asia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
With luck
About 10% of wildlife watchers report a The Passenger sighting in Vienna on a given day, based on 86 verified sightings from GBIF citizen-science data. It is the 203rd most-seen of the 1406 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.
May to September
In those months about 10% of wildlife watchers report a The Passenger in Vienna on a given day, against under 5% in October to April, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most The Passenger 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.
Among the best
Of the 11 cities where we can rate The Passenger sightings, Vienna ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Porto (Portugal, about 10%), Turin (Italy, about 10%) and Budapest (Hungary, about 10%).
Same family: Erebidae
The closest relatives of the The Passenger that you can see in Vienna (family Erebidae, Underwing, Tiger, Tussock, and Allied Moths) are Nine-Spotted Moth (about 10%), Four-Spotted Moth (about 10%) and Jersey Tiger (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the The Passenger is recorded against all the insects logged in Vienna (86 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.
