Anthocharis thoosa
In 3 days ~20% in a week ~40%
Anthocharis thoosa, the southwestern orangetip, is a butterfly which has a range mainly from the American Rocky Mountains down into Mexico. It is a member of the Anthocharis sara complex. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Zion National Park | 🇺🇸 United States | |
| 2 | Saguaro National Park | 🇺🇸 United States | |
| 3 | Grand Canyon National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Southwestern Orangetip sighting in Grand Canyon National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 76th most-seen of the 143 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April
In that month about 20% of wildlife watchers report a Southwestern Orangetip in Grand Canyon National Park on a given day, against under 5% in May to February, the lowest months. That is one of Grand Canyon National Park's driest months, with about 10 mm of rain against 40 mm in March.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Southwestern Orangetip sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 3
Of the 3 parks where we can rate Southwestern Orangetip sightings, Grand Canyon National Park ranks 3rd at about 10%. The best odds are in Zion National Park (United States, about 20%) and Saguaro National Park (United States, about 10%).
Same family: Pieridae
The closest relatives of the Southwestern Orangetip that you can see in Grand Canyon National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Checkered White (about 20%), Orange Sulphur (about 10%) and Dainty Sulphur (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Southwestern Orangetip is recorded against all the insects logged in Grand Canyon National Park (9 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.
