Observation notes: Observed within portion of Hanford National Monument affected by the Buckshot Fire of 2018. Sisymbrium and Brassica species, laden with buds, but not yet flowering. Saw numerous visits/landings/nectarings upon Allium robinsonii by this species. Some visits to Gilia sinuata. Partly cloudy, 70 Fahrenheit, 10 to 25 mph northerly wind.