Pteronemobius heydenii
In 3 days ~10% in a week ~30%
Pteronemobius heydenii, the marsh cricket, is a cricket in the family Trigonidiidae. It is found in Europe. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 2 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Marsh-Cricket sighting in Pyrénées National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 738th most-seen of the 1277 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.
January, April–May and August
In those months about 10% of wildlife watchers report a Marsh-Cricket in Pyrénées National Park on a given day, against under 5% in February–March, June–July and September–December, the lowest months.
Between 1 and 4 pm
Across all the parks we cover, that three-hour window holds the most Marsh-Cricket sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Marsh-Cricket sightings, Pyrénées National Park ranks 2nd at under 5%. The best odds are in Fertő-Hanság National Park (Hungary, about 10%).
GBIF citizen-science records
It is estimated from how often the Marsh-Cricket is recorded against all the insects logged in Pyrénées National Park (10 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.
