Photinus corrusca
In 3 days ~40% in a week ~70%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 3 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 4 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Montreal | 🇨🇦 Canada | |
| 3 | New York City | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Vancouver | 🇨🇦 Canada | |
| 6 | Washington | 🇺🇸 United States | |
| 7 | Philadelphia | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Winter Firefly sighting in Great Smoky Mountains National Park on a given day, based on 89 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 59th most-seen of the 822 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
April
In that month about 30% of wildlife watchers report a Winter Firefly in Great Smoky Mountains National Park on a given day, against under 5% in January and July–August, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Winter Firefly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 4
Of the 4 parks where we can rate Winter Firefly sightings, Great Smoky Mountains National Park ranks 2nd at about 10%. The best odds are in Acadia National Park (United States, about 20%).
Same genus: Photinus
The closest relatives of the Winter Firefly that you can see in Great Smoky Mountains National Park (genus Photinus, Rover Fireflies) are Common Eastern Firefly (about 10%) and Little Gray Firefly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Winter Firefly is recorded against all the insects logged in Great Smoky Mountains National Park (89 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.
