Field Notes - Small (about 20cm long) skitish foraging bird. White on front/underneath. Brown/grey on back/top. Thin dark mask to eyes.
Field Notes - at least 2 groups of 4 or 5 making a lot of noise and flittering around in opposite directions
Not much to work with here, but hoping for an ID. The second pic is even worse but shows a different angle
Palo Alto Summer Bird Count
This thing drove me crazy for weeks until I figured out it's an invasive species.
Mount Shasta Forest, McCloud 4750'