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
2020-01-23 06:39Granja de Camarón Chacalilla3
2020-01-28 17:59Mirador de Las Aves1
2020-02-12 08:30Estero El Soldado4
2020-02-19 07:31Bill Williams River NWR1
2020-02-17 07:15Lake Havasu--Castle Rock Bay2
2020-01-28 11:40Mittry Lake1
2020-01-27 08:58Imperial NWR (Yuma Co.)4
2020-01-23 12:05Mittry Lake--south overlook2
2020-02-08 06:52Cibola NWR--Hart Mine Marsh2
2020-01-25 14:49Estero Coyote2
2020-02-05 12:55Niland2
2020-02-07 07:00Salton Sea--Garst Rd./Morton Bay2
2020-02-16 13:11Salton Sea--Garst Rd. N. of Sinclair1
2020-02-01 07:30Salton Sea--south end1
2020-02-14 15:00Sonny Bono Salton Sea NWR--Rock Hill Trail2
2020-01-25 15:25Sonny Bono Salton Sea NWR2
2020-02-18 12:03Sonny Bono Salton Sea NWR--Unit 11
2020-02-16 08:04Sonny Bono Salton Sea NWR--Vendel Rd.3
2020-02-08 14:00San Quintín (pueblo)1
2020-02-18 08:31Tijuana Slough NWR--visitor center & adjacent trails1
2020-02-07 15:00Tijuana Slough NWR--South McCoy Trail area
2020-02-02 10:28San Diego Polo Club1
2020-02-08 12:41San Elijo Lagoon--La Orilla Trail2
2020-02-10 08:01San Elijo Lagoon--Stonebridge Trail2
2020-02-07 07:46San Diego River--estuary2
2020-02-10 07:43San Elijo Lagoon--east of Rios Ave.2
2020-01-24 07:03San Elijo Lagoon--Nature Center Loop1
2020-02-18 11:54Buena Vista Audubon Headquarters1
2020-02-10 11:12Upper Newport Bay--boardwalk5
2020-02-10 09:37Upper Newport Bay Nature Preserve--Muth Interpretive Center area5
2020-01-24 09:02Back Bay Science Center1
2020-02-09 08:11Harriett M. Wieder Regional Park1
2020-02-14 15:39Bolsa Chica--walkbridge/inner bay1
2020-02-19 15:20Bolsa Chica Ecological Reserve1
2020-02-09 08:11Seal Beach NWR (restricted access)1
2020-02-04 08:14Pt. Mugu Naval Air Station (restricted access)1
2020-02-16 09:41Don Edwards NWR--Mallard Slough3
2020-01-25 06:25Alviso Marina County Park (please use a specific pond hotspot where possible)1
2020-02-11 12:44Don Edwards NWR--LaRiviere Marsh2
2020-01-23 08:00Don Edwards NWR (ALA Co.)1
2020-02-18 12:52Coyote Hills Regional Park1
2020-02-14 10:00Palo Alto Baylands1
2020-02-05 12:27Byxbee Park2
2020-01-28 10:43Palo Alto Baylands--Duck Pond
2020-02-11 07:12Hayward Regional Shoreline1
2020-01-26 14:52San Francisco Bay Trail--Heron Bay6
2020-02-12 08:48San Leandro Marina1
2020-02-20 10:35MLK Jr. Regional Shoreline4
2020-02-20 12:00MLK Jr. Regional Shoreline--Arrowhead Marsh2
2020-02-19 17:16Radio Rd.2
2020-01-26 09:00Hoffman Marsh2
2020-02-08 11:00Pt. Isabel Regional Shoreline--seawatch
2020-02-08 12:00San Francisco Bay Trail--S 51st St.2
2020-02-08 12:00Richmond Pond (restricted access)2
2020-02-17 16:57Meeker Slough1
2020-02-10 12:10Bayfront Park--Millbrae (SM Co.)1
2020-01-25 11:10Port Sonoma1
2020-01-30 08:35Marta's Marsh1
2020-02-13 07:47Corte Madera Marsh1
2020-02-01 09:20Bel Marin Keys Unit V1
2020-01-24 13:48Bahia Marsh (MAS)1
2020-01-26 16:00McInnis County Park
2020-01-29 08:30Piper Park2
2020-01-24 08:40Corte Madera Creek1