Photinus corrusca
In 3 days ~50% in a week ~80%
| # | 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 |
Possible
About 20% of wildlife watchers report a Winter Firefly sighting in Acadia National Park on a given day, based on 81 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 20th most-seen of the 405 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April
In that month about 40% of wildlife watchers report a Winter Firefly in Acadia National Park on a given day, against under 5% in December to February, 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.
Yes
Of the 4 parks where we can rate Winter Firefly sightings, Acadia National Park has the highest daily chance: about 20%. Next come Great Smoky Mountains National Park (United States, about 10%) and Cape Breton Highlands National Park (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Winter Firefly is recorded against all the insects logged in Acadia National Park (81 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.
