California Sister (Adelpha californica) is in the Brush-footed Butterflies family (Nymphalidae). Across the U.S., iNaturalist users have logged 15,294 research-grade observations of it in our sample, peaking in June.
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 California Sister: observations by month (U.S.)
About California Sister
Adelpha californica, the California sister, is a species of butterfly in the family Nymphalidae. They are common in California, but can also be found in western Nevada and Oregon, as well as in northern Baja California. The upper surfaces of their wings are dark brown to black with wide cream white bands dissecting both wings and two orange patches near the tips of the forewings. The underside is variously colored with browns, blue, orange, and white....From Wikipedia via iNaturalist — article, CC BY-SA.
California Sister by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 14,369 | June | Apr–Oct |
| Oregon | 900 | September | Jun–Oct |
| Nevada | 18 | September | Sep–Oct |
| Washington | 7 | September | Sep–Sep |
Main season = months with at least 30% of the state's peak-month count.
Related butterflies (Brush-footed Butterflies)
Monarch
Gulf Fritillary
Common Buckeye
Red Admiral
Pearl Crescent
Painted Lady
American Lady
Variegated Fritillary
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 California Sister?
Nationally, June has the most observations, with the main season from April to October.
Where is California Sister most often seen?
The most observations come from California, Oregon, Nevada.