page_title: Benicia State Recreation Area
section_title: Habitat and wildlife
hierarchical_section_title: Benicia State Recreation Area / Habitat and wildlife
caption_attribution_description: Great Blue Heron at Benicia State Recreation Area
context_page_description: Benicia State Recreation Area is a state park unit of California, USA, protecting tidal wetland. It is located in the Solano County city of Benicia, 2 miles west of downtown Benicia and borders Vallejo's Glen Cove neighborhood. The park covers 447 acres of marsh, grassy hillsides and rocky beaches along the narrowest portion of the Carquinez Strait. Southampton Creek and the tidal marsh front Southampton Bay, where the combined waters of the Sacramento and San Joaquin Rivers approach San Pablo Bay, the northern portion of San Francisco Bay.
context_section_description: The Southampton Bay Wetland Natural Preserve makes up 70% of the park. The Southampton mudflat formed eroded upriver silt and clay deposits exceeds 1,000 feet (300 m) thick. The principal habitats here are brackish marsh, saltwater marsh and freshwater marsh. This rare and endangered wetland ecosystem is covered with marsh plants such as salt grass (Distichlis spicata), pickleweed (Batis maritima), coyote bush (Baccharis pilularis) and soft bird's-beak (Cordylanthus mollis). Bird’s-beak is an endangered gray-green annual herb in the snapdragon family.
  Park mammals include the federally endangered northern salt marsh harvest mice (Reithrodontomys raviventris halicoetes). Other mammals living in the park are coyote (Canis latrans), river otter (Lontra canadensis), muskrat (Ondatra zibethicus) and California golden beaver (Castor canadensis subauratus). The beaver probably migrated from the Sacramento-San Joaquin River Delta in 2007. Historically, before the California Fur Rush of the late eighteenth and early nineteenth centuries, the Delta probably held the largest concentration of beaver in North America. It was California's early fur trade, more than any other single factor, that opened up the West, and the San Francisco Bay Area in particular, to world trade. In 1840, explorer Captain Thomas Farnham wrote that "There is probably no spot of equal extent in the whole continent of America which contains so many of these muchsought animals."
  Benicia SRA has been designated an Important Bird Area, providing habitat for endangered California clapper rails (Rallus longirostris obsoletus) and black rails (Laterallus jamaicensis). Other uncommon species include Virginia rails (Rallus limicola), Suisun song sparrows (Melospiza melodia maxillaris) and salt marsh common yellowthroat (Geothlypis trichas sinuosa). On their journey along the Pacific Flyway, many waterfowl winter in the park.
caption: Great blue heron at Dillon Point, Benicia SRA 2009
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