[EBB Sightings] Burrowing Owl, and others, at Hayward Shoreline

Greetings.

This afternoon I flushed a BUOW from the trail below the west side of Mt. Trashmore.  (Mt. T. is the hill on the left, as you walk west from the very last parking lot at the end of Winton Ave.)
In a flock of White- and Golden-crowned Sparrows foraging on the trail below the north side of Mt. T., I had an exceedingly brief look at a bird that may have been the CLAY-COLORED SPARROW reported by Dave this morning.  The bird flew down to the trail and flew away right after landing.  It was obviously smaller than the crowned sparrows; and I had a brief impression, from the side, of a complex head pattern showing some white.
Earlier, near the last parking lot, I had a similarly brief and tantalizing view of a bird that may have been a TENNESSE WARBLER (yellow breast, white belly and undertail coverts, light supercilium, greenish back).

Good birding,
Emily Serkin
Castro Valley