California Ridgway’s rail (Rallus obsoletus obsoletus) is a federally endangered species that is currently only known to occur in the San Francisco Bay region of California. California Ridgway’s rail is a subspecies of Ridgway’s rail (Rallus obsoletus), a species that occurs in coastal tidal marsh habitat in central- and north-western Mexico, the Gulf of California, the Baja Peninsula, southern California, and the San Francisco Bay area. The U.S. Fish and Wildlife Service recently completed a five-year review summary and evaluation of California Ridgway’s rail. This presentation provides an overview of that five-year review including the actions the Service has been taking to conserve this subspecies. These actions include: conducting annual surveys at Don Edwards San Francisco Bay and San Pablo Bay National Wildlife Refuges; working with our partners and external experts to monitor population status and trends; working with the Invasive Spartina project to control invasive cordgrass in key marshes; conducting habitat restoration and enhancements; supporting a multi-year translocation and radiotracking study; and considering other research and work aimed at filling key knowledge gaps related to these and other Ridgway’s rail populations.