Coremacera marginata
In 3 days ~20% in a week ~30%
Coremacera marginata is a species of fly in the family Sciomyzidae, the marsh flies or snail-killing flies. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Wadden Sea National Park | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Sieve-Winged Snailkiller sighting in Bavarian Forest National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 661st most-seen of the 1115 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June and August–September
In those months about 10% of wildlife watchers report a Sieve-Winged Snailkiller in Bavarian Forest National Park on a given day, against under 5% in July and October–May, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Sieve-Winged Snailkiller sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Sieve-Winged Snailkiller sightings, Bavarian Forest National Park has the highest daily chance: about 10%. Next come Cévennes National Park (France, under 5%) and Wadden Sea National Park (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Sieve-Winged Snailkiller is recorded against all the insects logged in Bavarian Forest National Park (8 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.
