Becker's White (Pontia beckerii) is in the Whites, Yellows, and Sulphurs family (Pieridae). Across the U.S., iNaturalist users have logged 1,898 research-grade observations of it in our sample, peaking in July.
Seasonal pattern in the national data: summer visitor / breeder. Counts also reflect when people are out photographing, so compare months within a state rather than across states.
When to photograph Becker's White: observations by month (U.S.)
About Becker's White
Pontia beckerii, the Becker's white, Great Basin white, or sagebrush white, is a butterfly in the family Pieridae. It is found in western North America from Baja California, Mexico to southern British Columbia, Canada.From Wikipedia via iNaturalist — article, CC BY-SA.
Becker's White by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 607 | July | Mar–Aug |
| Washington | 311 | July | Apr–Aug |
| Oregon | 294 | July | Apr–Aug |
| Idaho | 242 | July | Jul–Aug |
| Nevada | 168 | July | Apr–Aug |
| Utah | 124 | May | Mar–Jul |
| Colorado | 80 | June | May–Aug |
| Montana | 39 | July | Jun–Aug |
| Wyoming | 14 | July | Jun–Aug |
| Arizona | 10 | March | Mar–Mar |
| New Mexico | 9 | April | Mar–May |
Main season = months with at least 30% of the state's peak-month count.
Related butterflies (Whites, Yellows, and Sulphurs)

Small White

Orange Sulphur

Cloudless Sulphur
Sleepy Orange
Checkered White

Dainty Sulphur

Little Yellow
Clouded Sulphur
Photography tips
- Butterflies are sluggish on cool mornings — the best time for close approaches.
- Keep the sensor parallel to the wings for edge-to-edge sharpness.
- Nectar plants in bloom are reliable places to wait.
FAQ
When is the best time to photograph Becker's White?
Nationally, July has the most observations, with the main season from April to August.
Where is Becker's White most often seen?
The most observations come from California, Washington, Oregon.