Mayhew 1947. Journal 6. April 19 Wildcat Canyon, Contra Costa Co., Calif. morning. We spent the time learning more bird songs. The species seen were: Olive-sided Flycatcher, Song Sparrow, Orange-crowned Warbler, Spotted Towhee, Pine Siskin, Allen's Hummingbird, Purple Finch, California Jay, Oregon Junco, Bush-tit, Pileated Warbler, Sharp-skinned Hawk, Black-headed Grosbeak, Titmouse, Western Flycatcher, Stella's Jay, Red-winged Blackbird, Ring-necked Duck, Black Phoebe, Coot, and American Goldfinch. In addition to these, the songs of the Quail, Wren-tit, & Warbling Vireo were also heard. April 26 Bay Farm Island, Alameda Co., Calif. The trip today began at 5:15 AM. at the bridge to the island. After about an hour of individual observation, the class organized and began studying the species near the bridge. Then we continued east along the shore of the bay and around an arm of the bay. The tide had just started to drop when we arrived, and by 9:30 A.M. was about a quarter of a mile from the high tide line. During the trip, we observed in several habitats: sandy beach, mud flat, marsh land (Salicornia) and grassland. For the major part of the morning, nearly all the shorebirds were feeding. During the trip, the following species were seen: Meadowlark, Great Blue Heron, Semi-palmated Plover, Dowitcher, Red-backed Sandpiper, Killdeer, English Sparrow, Marbled Godwit, Mallard,