What are the chances of seeing a Psychoda sigma in London?
Rare
Under 5% of wildlife watchers report a Psychoda sigma sighting in London on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 1219th most-seen of the 1504 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.
When is the best time to see a Psychoda sigma in London?
February and December
In those months about 10% of wildlife watchers report a Psychoda sigma in London on a given day, against under 5% in January and March–November, the lowest months.
Is London the best place to see a Psychoda sigma?
Among the best
Of the 6 cities where we can rate Psychoda sigma sightings, London ranks 5th at under 5%, level with the leaders once rounded. The best odds are in Auckland (New Zealand, under 5%), Melbourne (Australia, under 5%) and Portland (United States, under 5%).
Where does the Psychoda sigma sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Psychoda sigma is recorded against all the insects logged in London (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.