Marshall, 1939 a 8. Melospiza melodia San Pablo Creek, Contra Costa Co., Calif. Dec. 14. grew in the stream bed at this point. 751 was taken in a weed field 30 yards from the willows, the rest from the willows, and a couple from the cattails. The birds were very active, chasing each other about and arriving at the willows (from nearby weeds & vine tangles) in loudly- calling & coisterous twoes & threes. They seemed to be concentrated at the willows because little available weed habitat elsewhere (all cultivated). Foraged on ground at base of willows & vine tangles. 750 - 762 taken next in tules, weeds, and Salicornia 200-400 yards west of the last willows along the slough from San Pablo Creek. They were chasing each other about & 8's were singing from the tops of tules & from tops of a few solitary baccharis on edge of slough. Foraged on gnd.- could be squeeked up on top of tules & collected. Usually out of sight (well under cover of weed growth & tules). Next drove 4 1/2 mi. up San Pablo Creek into the Canyon where 3 taken 745-7 along the creek (in blackberry