Marshall 1947 Melospiza Collections Sept-Oct 1947 129. 6 localities along Alviso Slough & Guadalupe R. Santa Clara Co. Calif. (See Catalog) (See Palo Alto & San Jose Quadrangles) This represents a continuous population for 9 miles. From the 1st willow upstream, is only single column of pairs N of Alviso, spreads out in vast marshes. Bay shore mouth Alviso Slough 3737-3746 Very abundant but only in grindelea along little natural sloughs. Spartina grows in the sloughs. Salicornia on flats between them but is very low with jammer, Frankenia looks like marshes in LA Co. very low as not in clumps. Looks like it is overrun by tides. willow blackberry rose chupodion high tide gindelea salicma vertical arrangement of vegetation Spartina low tide SP RR. Alviso Slough, Santa Clara Co. 3679-3690 Pure Natural Salicornia-grindelea-Spartina. Savannah Sparrows too. Birds rather well spaced. about 24 in area shown. I rowed all along this slough from Alviso to the bay & found continuous growth of tall Spartina all the way with center population of sparrows, at arrow, saw one fly across the slough. pure salt habitat (Salicornia grindelea) & first willow Salt Beds pure Spartina vast expanses of Spartina last pure salt habitat(Salicornia grindelea) & first willow habit somewhat mixed until here where heavy Willow blackberry growth continues, still tidal past here though. pure Salicornia-Guadalupe R. Grindelea with salt marsh 1/2 mi SE Alviso Wide Spartina areas on 3625-3634 lower ground. All coll with couple yds of river. mixed habitat Salicornia Guadalupe R. 7/8 mi gindelea low on banks, SE Alviso 3615-3624 Salt common higher Only about 12 birds noted along here. All coll within 5 yds of streamside. Guadalupe R., 1 1/2 mi SE Alviso 3635-3642 3691-3692 Stream tidal here and limited by artificial banks, but veg is all pure fresh water: mostly low willow & blackberry. Single column of pairs. Only about 15-20 birds in this 900 yds. Guadalupe R., 4 1/2 mi SE Alviso Santa Clara Co! 3693-3702 Probably 15-20 birds. Took 10 birds in 4/6 hrs more 600 yds. standing fresh water. Can be no more than single line of pairs. High artificial banks narrow the habitat but is good growth open willows, typha, blackberry Box Elder, Alders, Rose.