Cramptonomyia spenceri
In 3 days ~10% in a week ~20%
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Cramptonomyia spenceri sighting in Portland on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 466th most-seen of the 507 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.
February
In that month about 10% of wildlife watchers report a Cramptonomyia spenceri in Portland on a given day, against under 5% in March to January, the lowest months.
Among the best
Of the 3 cities where we can rate Cramptonomyia spenceri sightings, Portland ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Vancouver (Canada, under 5%) and Seattle (United States, under 5%).
Same order: Diptera
The closest relatives of the Cramptonomyia spenceri that you can see in Portland (order Diptera, Flies) are Yellow-Haired Sun Fly (about 10%), Black Soldier Fly (about 10%) and Narcissus Bulb Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cramptonomyia spenceri is recorded against all the insects logged in Portland (5 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.
