Marshall, 1947 50. Molopiza May 2 SE By airplane trip Napa R. 1 mi N- several mi S very narrow habitat but OK for single pairs, Scirpus acutus up to Napa bridge, weeds willows N of there freshwater marsh [continuous Population] Intergrading Scirpus willows Napa * Revisit Carneros Cr. OK junction Willows [No birds in willows] because of succession IN to oaks & Laurels 300-400 yds. Huichica Creek - gap 200-300yds [Gap] [No birds along Creek until Longhurs'ts Ranch due to impermanence of H2O & grazing Sonoma Creek very narrow line of Scirpus after last willow continuous gt. expanses salt marsh where crosses RR to SE . Near mouth- very wide salt marsh- Baccharis only in lines along banks. Conclusions: samuelis contin pop from Gallinas to Vallejo; pucillula contin pop San Mateo to San Lorenzo, somewhat interrupted by salt arcs at Coyote Hills the lds may extend San Leandro Mulford Landing, "Emeryville" along dykes out in bay. Richardson, Cortevadera, SSF, Southampton, Torney, Rinde, Sobrante, Ss Pablo, Stege, "W Berkeley" all isolated.