HaldenMagasinet nr. 5 - Byline

Bunker Marsh (20g)SAN LEANDRO/HAYWARD SHORELINEBunker Marsh (Figure 11, Table 11) is a part of theRobert’s Landing complex of marshes restored to tidalmarsh in 1995. The site is heavily invaded by Spartinahybrids, but has pockets of native vegetation, includingGrindelia, Salicornia, and Jaumea.Bunker Marsh was surveyed using Protocol “A” for a total of three rounds of passivelistening. Surveys were conducted on January 17, February 18, and March 14, 2007 byJ. McBroom. We detected 3-6 clapper rails on the first round, six clapper rails on thesecond round, and 3-4 rails on the final round. A small portion of the site (5%) was notincluded by the established listening stations (Table 1). However, when we extrapolatedthe population based on the density, we arrived at the same number of rails as detectedduring the highest count: six rails, or three pairs (Table 2).Other birds detected at Bunker Marsh include: common yellowthroat, great egret,marsh wren, red-winged blackbird, savannah sparrow, song sparrow, sora, Virginia rail,and white-crowned sparrow.Figure 10. Map of clapper rail survey results atBunker Marsh (20g)J. McBroom, OEI 16 California Clapper Rail Survey Report for 2007July 6, 2006Invasive Spartina Project