Observation notes: Repeat sighting in the same area as the last several sightings among grasses, mustard, and thistle, as part of a transitional zone between riparian terrain and drier chaparral. Individual was willing to sit for longer periods, intermittently flying about energetically in random patterns, much like Blues. It seems to like this yellow flower, but I am unsure of the plant identity. Weather has been unseasonably cool for July, with late breaking fog. Community hosts Whites, Sulfurs, Buckeyes, Blues, Hairstreaks, and several occasional larger species.