Ectobius sylvestris
In 3 days ~30% in a week ~60%
Ectobius sylvestris, known generally as the forest cockroach or lesser cockroach, is a species of cockroach in the family Ectobiidae. It is found in Europe and Northern Asia (excluding China), North America, and temperate Asia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Białowieża National Park | 🇵🇱 Poland | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany |
No species of the same family or order lives in Białowieża National Park, so these are its closest relatives here: other insects.
With luck
About 10% of wildlife watchers report a Forest Cockroach sighting in Białowieża National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 95th most-seen of the 158 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
February
In that month about 40% of wildlife watchers report a Forest Cockroach in Białowieża National Park on a given day, against under 5% in March–July and October–January, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Forest Cockroach 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.
Yes
Of the 2 parks where we can rate Forest Cockroach sightings, Białowieża National Park has the highest daily chance: about 10%. Next come Bavarian Forest National Park (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Forest Cockroach is recorded against all the insects logged in Białowieża National Park (7 verified sightings from 2019 to 2026), 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.
