Ectobius sylvestris
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report a Forest Cockroach sighting in Prague on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 345th most-seen of the 724 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.
May
In that month about 10% of wildlife watchers report a Forest Cockroach in Prague on a given day, against under 5% in June to April, 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.
5th of 7
Of the 7 cities where we can rate Forest Cockroach sightings, Prague ranks 5th at under 5%. The best odds are in Helsinki (Finland, about 10%), Nizhny Novgorod (Russia, about 10%) and Kyiv (Ukraine, under 5%).
GBIF citizen-science records
It is estimated from how often the Forest Cockroach is recorded against all the insects logged in Prague (14 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.
