John Stump and I birded Smith Reservoir today (Costilla County) and re-found the juvenile Sabine's Gull. It was way across the lake on the NE lake shore. Baird's and Semi-palmated Sandpipers were still on the west side shoreline.
At San Luis Lake( Alamosa County), we did not re-find the Lesser Black-backed Gull. We did find 5 Black-bellied Plovers, 1 Semi-palmated Plover, 5 Sanderlings and about 20 Baird's Sandpipers.