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 |
With luck
About 10% of wildlife watchers report a Forest Cockroach sighting in Bavarian Forest National Park on a given day, based on 39 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 1115 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.
May and June
In those months about 20% of wildlife watchers report a Forest Cockroach in Bavarian Forest National Park on a given day, against under 5% in December and 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.
Among the best
Of the 2 parks where we can rate Forest Cockroach sightings, Bavarian Forest National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Białowieża National Park (Poland, about 10%).
Same genus: Ectobius
The closest relatives of the Forest Cockroach that you can see in Bavarian Forest National Park (genus Ectobius) are Amber Wood Cockroach (about 10%) and Dusky Cockroach (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Forest Cockroach is recorded against all the insects logged in Bavarian Forest National Park (39 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.
