Cogswell 1948 Mareca americana Oct. 24 San Pablo Reservoir, 300+ ft., Contra Costa Co., Calif. about 250 estimated in scattered flock, with a few teal & pintails, feeding in shallow end of lake m mid PM. Males were pretty well along toward bright plumage. No baldpates were seen among large flocks resting on N.E. shore, but some may have been there. 1949 Feb. 5- Victoria Isl., western San Joaquin Co., Calif: a number scattered among large flock of pintails on open fields. — the only baldpates seen all day on trip from here to Stockton, Sacraments, Woodland, & Marysville.