Erynnis juvenalis
In 3 days ~20% in a week ~50%
Gesta juvenalis, commonly known as Juvenal's duskywing, is a species of butterfly in the family Hesperiidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Congaree National Park | 🇺🇸 United States | |
| 4 | Riding Mountain National Park | 🇨🇦 Canada | |
| 5 | Point Pelee National Park | 🇨🇦 Canada | |
| 6 | Merritt Island National Wildlife Refuge | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Baltimore | 🇺🇸 United States | |
| 3 | San Antonio | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Dallas | 🇺🇸 United States | |
| 6 | Toronto | 🇨🇦 Canada | |
| 7 | New York City | 🇺🇸 United States | |
| 8 | Austin | 🇺🇸 United States | |
| 9 | Miami | 🇺🇸 United States | |
| 10 | Montreal | 🇨🇦 Canada |
With luck
About 10% of wildlife watchers report a Juvenal's Duskywing sighting in Riding Mountain National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 58th most-seen of the 104 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
June
In that month about 20% of wildlife watchers report a Juvenal's Duskywing in Riding Mountain National Park on a given day, against under 5% in July and September–May, the lowest months. That is one of Riding Mountain National Park's wettest months, with about 100 mm of rain against 20 mm in February.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Juvenal's Duskywing sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
4th of 6
Of the 6 parks where we can rate Juvenal's Duskywing sightings, Riding Mountain National Park ranks 4th at about 10%. The best odds are in Great Smoky Mountains National Park (United States, about 20%), Shenandoah National Park (United States, about 10%) and Congaree National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Juvenal's Duskywing is recorded against all the insects logged in Riding Mountain National Park (13 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.
