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y <br /> greater yellowlegs, and American avocet (Recurvirostra americana)represent the former <br /> group. Edge habitat can be selectively managed on Tracy Lake. Herons, egrets, and <br /> several species of gulls will also benefit from water level management that supports <br /> shorebirds. Once completed the restored seasonal marsh will provide shallow ponds, <br /> marsh, and fluctuating shallows. These habitats are utilized by 18 species of shorebirds <br /> that migrate through or winter in the California Delta. <br /> In its current hydrologic regime,Tracy Lakes will not provide habitat during fall migration <br /> (August - October) due to dry lake conditions. However,restoration efforts, and pumped <br /> well water will create shallow flooded conditions that will support a substantial fall <br /> migration (September - November). Dowitchers, yellowlegs, sandpipers, common snipe, <br /> plovers, and others will utilize the early flooded conditions. Due to the deepness of both <br /> lakes expected each spring (as is the case under current hydrologic regimes), migrants will <br /> not be attracted to the seasonal marsh habitat of South Lake. <br /> Resident wetland species such as common yellowthroat, song sparrow, marsh wren and <br /> red-winged blackbirds are all expected to increase in number,particularly during the <br /> breeding season, as emergent marsh is re-established. <br /> 7.32 Seasonal Marshes <br /> Goals: <br /> • To enhance, create, and manage a diversity of seasonal marsh community types that will <br /> benefit numerous species of wildlife. <br /> Objectives: <br /> • To promote and maintain maximum biological diversity. <br /> Buckeye Ranch Resource Plan (November, 1993) <br /> 184 <br />