[SBB] Glaucous Gull & continuing Black and White Warbler

The first stop for twenty plus birders on today's SCVAS field trip was at New Chicago Marsh where we had a second, or third winter GLAUCOUS GULL (a large essentially all white gull with a pale grayish tint to the mantle, all white primaries, pink legs and a pink bill with a well defined black tip). When first found in the marsh, northeast of the railroad tracks near where they curve to the left, it was the western most gull in a flock roosting along the edge of open water. The GLGU then flew, east and a bit south, to the approximate center of the marsh and landed among hundreds of gulls there where it could still be located by it's bill. Later the large male RUFF was found on the north side of the Environmental Education Center entrance road (it then flew to the south side of the road as we watched). There was no sign of the Ross's Geese. We then went to Ed Levin County Park where we had good views of the male YELLOW-BELLIED SAPSUCKER, from the north side of the road, as it worked between several of the Tamarisk trees. Our next stop was Penitencia Creek Park where the juvenile GREATER WHITE-FRONTED GOOSE showed no fear, even as we got quite close, as in stood surrounded by CANADA GEESE. Frank Vanslager then re-found the BLACK AND WHITE WARBLER (yeah!) at about eye level in some fairly small branched bushes on the north side of the creek about 300 feet downstream of the wooden bridge. We then failed to see either the Brant (we were told it was on the golf course) or the Snow Geese (kite flying and RC car racing must have proved too distracting). We then had great views of the male and female BARROW'S GOLDENEYE on Shoreline Lake and had between 19 to 30+ BLACK SKIMMERS, depending on who was counting, on the island in Charleston Slough. Even though we failed to pick our final "cherry" of the day, a Eurasian Wigeon at the Palo Alto yacht Harbor, I feel we still got pretty high up into the tree this year.