Argia emma
In 3 days ~10% in a week ~20%
Argia emma, or Emma's dancer, is a species of narrow-winged damselfly in the family Coenagrionidae. It is found in North America. The IUCN conservation status of Argia emma is "LC", least concern, with no immediate threat to the species' survival. The population is stable. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Redwood National Park | 🇺🇸 United States | |
| 2 | Yellowstone National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Denver | 🇺🇸 United States | |
| 2 | Sacramento | 🇺🇸 United States | |
| 3 | Portland | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Emma's Dancer sighting in Portland on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 402nd 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.
July
In that month about 10% of wildlife watchers report an Emma's Dancer in Portland on a given day, against under 5% in August to June, the lowest months. That is one of Portland's driest months, with about 10 mm of rain against 250 mm in December.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Emma's Dancer sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 cities where we can rate Emma's Dancer sightings, Portland ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Denver (United States, under 5%) and Sacramento (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Emma's Dancer is recorded against all the insects logged in Portland (8 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.
