Marshall, 1947 Melospiza May 29 Alameda Co., Salt marshes, Calif. All salt marshes from Roberts Landing south to Castle Hills are the bunk - no natural condition remains, they are used for sewage & garbage, the rest for salt works - & the salicornia burned off even the banks of the salt ponds. The slough slumion on Quadrangle just W. Hayward station is man made & contains sewage, does not form contiu habitat. However where SPRR tracks cross it just N Russell City, are some willows, Conima, rusted with less [illegible] acres in extent but at least 3 pr. Song sparrows - juncos also seen. A very small isolated piece of habitat disconnected from any other birds for possibly a mile in any directio. Johnson Landing - salt works. S side San Mateo bridge road is farm with sm. duck ponds bordered by willows & S. cangaris & Typha. This near salt works (where no salt marsh sparrows seen). One ss seen on this duck pond - an adult-brown, with heavy black streaks (saltamensis) - and thus example of very small isolated habitat. Area big enough for 2 or 3 pairs possibly. Drove onto salt works at Leslie.