1942 March. 19. A pair of bush tits is building a nest in a Monterey Pine at 35 Moorwood Rd. It is in the tip of the lowest branch which extends out over Moorwood Rd., and is ap- parently about finished. Thrasher singing in the same brush where I saw him on Mar.16. Mar. 20. I heard a single chip of a Paleolated Warbler. Windy last night and chilly until noon. Then the wind stopped and it was very warm. Screech Owls active in Los at night. Mar. 21. A warm spring day. We drove to Boulder Creek for the week-end. Heard several Lutes, cent Warblers on Mountain Blvd. At the Alvarado pools there were many coots, pir- tails, shovellers, and twelve pairs of Greenwinged Teals (more than I have ever seen at one time). The Teal were too far away for me to see all the colors but they were small dark ducks with a white bar in front of the wing. They were skimming the surface of the water or had their heads and tails just under the water with the center of the back above. There were Willets, Donitaters, Bk. Clover and Killdeer, many Avocets (only one with gray neck), 1 Lesser Yellowlegs. As we drove into Alvarado there was a Greater Yellowlegs in a pool beside the road. As we neared the Coyote Hills in a pool at the intersection at the corner of The Patterson Ranch there were many Red-backed Sandpipers. I saw my first Cliff Swallows at the Alvarado pools. Many robins in the marsh with the St. Yellowlegs.