Pieris marginalis
In 3 days ~50% in a week ~80%
Pieris marginalis (margined white) is a butterfly species seen across the coast of Western North America. It is a canopy generalist who feeds on the plant family of Brassiceae. The species is unique as it has been seen near and away from disturbed habitat; indicating an adaptation for habitat generalization. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Redwood National Park | 🇺🇸 United States | |
| 2 | Olympic National Park | 🇺🇸 United States | |
| 3 | Glacier National Park | 🇺🇸 United States | |
| 4 | Rocky Mountain National Park | 🇺🇸 United States | |
| 5 | Grand Teton National Park | 🇺🇸 United States | |
| 6 | Zion National Park | 🇺🇸 United States | |
| 7 | Yellowstone National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vancouver | 🇨🇦 Canada | |
| 2 | Anchorage | 🇺🇸 United States | |
| 3 | Seattle | 🇺🇸 United States | |
| 4 | Portland | 🇺🇸 United States | |
| 5 | San Francisco | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Margined White sighting in Redwood National Park on a given day, based on 47 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 4th most-seen of the 101 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.
March to May
In those months about 40% of wildlife watchers report a Margined White in Redwood National Park on a given day, against under 5% in August to January, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Margined White 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 7 parks where we can rate Margined White sightings, Redwood National Park has the highest daily chance: about 20%. Next come Olympic National Park (United States, about 20%) and Glacier National Park (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Margined White is recorded against all the insects logged in Redwood National Park (47 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.
