Sisyra nigra
In 3 days ~10% in a week ~20%
Sisyra nigra is a species of spongillafly in the family Sisyridae. It is found in Europe and Northern Asia (excluding China) and North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Black Spongillafly sighting in Paris on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 686th most-seen of the 916 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
August
In that month about 10% of wildlife watchers report a Black Spongillafly in Paris on a given day, against under 5% in September to July, the lowest months.
Among the best
Of the 3 cities where we can rate Black Spongillafly sightings, Paris ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Berlin (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Black Spongillafly is recorded against all the insects logged in Paris (7 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.
