Tharsalea dorcas
In 3 days ~20% in a week ~30%
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rocky Mountain National Park | 🇺🇸 United States | |
| 2 | Gros Morne National Park | 🇨🇦 Canada | |
| 3 | Grand Teton National Park | 🇺🇸 United States | |
| 4 | Glacier National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Dorcas Copper sighting in Glacier National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 119th most-seen of the 147 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
July and August
In those months about 10% of wildlife watchers report a Dorcas Copper in Glacier National Park on a given day, against under 5% in September to June, the lowest months. Those are among Glacier National Park's driest months, with about 30 mm of rain a month against 80 mm in February.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Dorcas Copper sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate Dorcas Copper sightings, Glacier National Park ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Rocky Mountain National Park (United States, about 10%), Gros Morne National Park (Canada, about 10%) and Grand Teton National Park (United States, about 10%).
Same genus: Tharsalea
The closest relatives of the Dorcas Copper that you can see in Glacier National Park (genus Tharsalea) are Mariposa Copper (about 20%), Blue Copper (about 20%) and Purplish Copper (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dorcas Copper is recorded against all the insects logged in Glacier National Park (7 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.
