We try to make it into the high Sierras in early June. Many of the migrants have made their way to breeding grounds there or are passing through. Most are in bright breeding plumage and are singing which makes them easier to find. The Evening Grosbeak, however, is not a migrant in Sierra County, it is there all year long.
Of the four years we have trekked into the area between Sierra City and Yuba Pass, California, we have seen a few of this species at a time. This year (2020) there were many at road sides and in in the woods eating the young buds of conifers. The bird in the photo was in the process of eating young buds. The roadside birds were apparently consuming a coarse volcanic ash that occurs in the area and I suspect this is to provide abrasives for their digestive systems.