Note heavy spotting on the neck and breast, diagnostic spotting on the side of the breast, and primaries extended beyond tertials. Also short bill, for what that's worth. Most of the dowitchers at the Radio Road pond were Long-billed, as indicated by the many "keek!" calls I heard. Compare a Long-billed Dowitcher photographed a few days later at Shoreline Park in Mountain View, http://www.pbase.com/image/136737939