Enallagma anna
In 3 days ~10% in a week ~30%
Enallagma anna, the river bluet, is a species of narrow-winged damselfly in the family Coenagrionidae. It is found in southern Canada and western and northeastern United States. The IUCN conservation status of Enallagma anna is "least concern", with no immediate threat to the species' survival. The population is stable. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yellowstone National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a River Bluet sighting in Yellowstone National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 102nd most-seen of the 160 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.
August
In that month about 10% of wildlife watchers report a River Bluet in Yellowstone National Park on a given day, against under 5% in September to July, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most River Bluet sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Yellowstone National Park, in our data
Yellowstone National Park is the only park on Wallace's Line with enough records to rate River Bluet sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Coenagrionidae
The closest relatives of the River Bluet that you can see in Yellowstone National Park (family Coenagrionidae, Narrow-winged Damselflies) are Vivid Dancer (about 10%), Western Red Damsel (about 10%) and Paiute Dancer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the River Bluet is recorded against all the insects logged in Yellowstone National Park (18 verified sightings from 2019 to 2026), 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.
