This project is Task #7 of SANDAG contract number 5004388: Rare Butterfly Management and Conservation Planning. A summary of this task is provided below. Surveys for Harbison’s dun skipper adults were conducted to assess year to year variation in population size. Field visits were used to document use including plants used for nectar sources, as well as obtain non-lethal genetic samples. A rapid habitat assessment was conducted at each site which included general woodland tree species composition, condition of San Diego sedge plants, and recording potential threats to the Harbison’s dun skipper.