Erynnis juvenalis
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report a Juvenal's Duskywing sighting in Boston on a given day, based on 39 verified sightings from GBIF citizen-science data. It is the 325th most-seen of the 1200 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.
May
In that month about 10% of wildlife watchers report a Juvenal's Duskywing in Boston on a given day, against under 5% in June to April, the lowest months.
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.
Yes
Of the 10 cities where we can rate Juvenal's Duskywing sightings, Boston has the highest daily chance: under 5%. Next come Baltimore (United States, under 5%) and San Antonio (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Juvenal's Duskywing is recorded against all the insects logged in Boston (39 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.
