of their miniature and very ragged as if they were moulting. The few adults seen near by were California Gulls except for two Bonaparte Gulls with black heads. All were very dumpy - only two or three were seen in flight. The three adult Avocets were seen again. I got out of the car to see them, better and they became very excited, flying about and giving their alarm notes. I Could not see the babies - perhaps they were on the far side of a dyke. A number of Sandpipers were at the edges of the last salt pools. I looked them & be Least but could not get the color of the legs. I could only judge by size, the brownish coloration and dusky chests. A number of Willets were seen. Mountain Creek Marsh At Dumbarton Bridge the tide was too far out but a few Curlews were near the highway, both Hudsonian and Long- billed. July 17. There was a surprising amount of bird song Boulder Creek. at dawn and during the morning which was clear and quite hot but with a good breeze. Purset-backed Thrush, Cassin and Warbling Vireo, Olive-sided and Western Fly- catchers, Spotted Towhee, junco, Goldfinch. Grosbeaks gave the "cheek" note and once I heard the a-wheel-so used with the young- The Bicolored and Yellow Warblers were not singing