SF Peninsula Sites
San Mateo County & Coastal Range
Burleigh Murray State Park
One of the best butterfly sites in the Bay Area. 28 confirmed species including Margined White, Two-banded Checkered-Skipper, and both Satyr and Oreas Commas.
Half Moon Bay · Best March–June
Edgewood County Park
Oak and chaparral habitat with 10 endangered plants. Former home of the federally threatened Bay Area Edith's Checkerspot; restoration is underway.
Redwood City · Best March–July
Skyline, Long Ridge & Windy Hill Open Space Preserves
Prime coastal range habitat with 60+ species. Highlights include the scarce Unsilvered Fritillary (Long Ridge), "Grinnell's" Pacuvius Duskywing, Golden Hairstreak, and "Chalcedon" Variable Checkerspot.
Peninsula ridgeline · Best April–August
Still looking for on the Peninsula
- Pipevine Swallowtail
- Purplish Copper
- Great Purple Hairstreak
- Mountain Mahogany Hairstreak
- Greenish Blue
- Northern Cloudywing
- Small Checkered-Skipper