Ridgway's rail (Rallus obsoletus) is an endangered species of bird. It is found principally in California's San Francisco Bay to southern Baja California. A member of the rail family, Rallidae, it is a chicken-sized bird that rarely flies.

This species is closely related to the clapper rail, and until recently was considered a subspecies. It has a long, downward curving bill and is grayish brown with a pale chestnut breast and conspicuous whitish rump patch. The population levels of Ridgway's rail are precariously low due to destruction of its coastal and estuarine marshland habitat by prior land development and shoreline fill. It has year-long, circadian activity and is most vocal nocturnally and crepuscularly.

Ridgway's Rail
Date Location Count
2019-09-17 07:10Aeropuerto Internacional de Tepic2
2019-09-10 23:30Mittry Lake2
2019-09-10 06:37Imperial Irrigation District Wetland Project--Niland1
2019-09-09 09:37Salton Sea--Garst Rd./Morton Bay1
2019-09-20 07:19Sonny Bono Salton Sea NWR--Union Tract / Visitor Center1
2019-09-15 08:50Sonny Bono Salton Sea NWR--Rock Hill Trail1
2019-09-21 06:25Sonny Bono Salton Sea NWR--Unit 11
2019-09-12 07:20Dos Palmas Preserve1
2019-09-10 13:30Dairy Mart Rd.--main pond1
2019-09-19 12:38Tijuana Slough NWR--visitor center & adjacent trails2
2019-09-14 07:48San Elijo Lagoon--La Orilla Trail1
2019-09-09 08:05San Elijo Lagoon--Stonebridge Trail1
2019-09-21 08:10Tijuana River mouth3
2019-09-15 15:30San Elijo Lagoon--Rios Ave. entrance2
2019-09-21 07:18San Diego River--estuary2
2019-09-15 08:08Famosa Slough1
2019-09-14 06:35San Diego River--tidal mudflats1
2019-09-14 10:41Harriett M. Wieder Regional Park1
2019-09-17 07:25Bolsa Chica--Brightwater area1
2019-09-21 06:46Bolsa Chica--walkbridge/inner bay1
2019-09-19 09:15Bolsa Chica Ecological Reserve1
2019-09-16 12:13San Francisco Bay Bird Observatory1
2019-09-15 11:01Charleston Slough/Coast Casey Forebay1
2019-09-20 18:02Palo Alto Baylands1
2019-09-20 07:51Byxbee Park1
2019-09-13 17:01Palo Alto Baylands--Duck Pond2
2019-09-14 14:21Hayward Regional Shoreline--Grant Ave. access4
2019-09-17 07:45MLK Jr. Regional Shoreline3
2019-09-21 07:50MLK Jr. Regional Shoreline--Arrowhead Marsh4
2019-09-14 10:53Hoffman Marsh1
2019-09-14 08:30Pt. Isabel Regional Shoreline1
2019-09-20 08:22San Francisco Bay Trail--S 51st St.1
2019-09-15 07:08Bayfront Park--Millbrae (SM Co.)1
2019-09-17 13:01San Pablo Bay NWR - Reclamation Rd.2
2019-09-13 10:40Marta's Marsh1
2019-09-08 17:27Las Gallinas Valley Sanitary District1
2019-09-15 12:51Piper Park1
2019-09-14 07:31Ellis Creek Water Recyling Facility1