Stylurus olivaceus
In 3 days ~10% in a week ~30%
Stylurus olivaceus, the olive clubtail, is a species of clubtail in the dragonfly family Gomphidae. It is found in North America. The IUCN conservation status of Stylurus olivaceus is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2017. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States | |
| 2 | Sacramento | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Olive Clubtail sighting in Portland on a given day, based on 36 verified sightings from GBIF citizen-science data. It is the 154th 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 30%, if each day is a fresh chance.
July to September
In those months about 10% of wildlife watchers report an Olive Clubtail in Portland on a given day, against under 5% in October to June, the lowest months. Those are among Portland's driest months, with about 30 mm of rain a month against 250 mm in December.
Yes
Of the 2 cities where we can rate Olive Clubtail sightings, Portland has the highest daily chance: under 5%. Next come Sacramento (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Olive Clubtail is recorded against all the insects logged in Portland (36 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.
