Remsen, J.V. 1973 Ring-billed Gull Larus delawarensis July 6 Palo Alto Yacht Harbor, Santa Clara Co, Calif: 20 g Dumbarton Bridge, Alameda Co, Calif: 2i July 14 Boca Dam, Nevada Co, Calif: 1 Bolinas Lagoon, Marin Co, Calif: 75 July 13 Sears Point Rd, Solano Co, Calif: 5 July 21 Whitewater Rivemouth, Salton Sea, Riverside Co, Calif: 30 South end Salton Sea, Imperial Co, Calif: 10 July 22 Imperial Valley, Imperial Co, Calif: 115 Aug.5 Bay Bridge Toll Plaza, Alameda Co, Calif: 5 Bodega Harbor, Sonoma Co, Calif: 5 Limantour Spit, Marin Co, Calif: 5 Aug.31 Bolinas Lagoon: 80 Sep.2 Bay Bridge Toll Plaza: 1 Sep.14 North end Salton Sea, Riverside Co, Calif: 100 South end Salton Sea: 200 Sep.18 Moss Landing, Monterey Co, Calif: 1ad. Sep.23 Moss Landing: 5 Sep.27 Moss Landing: 15 Sep.29 Eureka area, Humboldt Co, Calif: 75 Sep.30 Humboldt Bay, Humboldt Co.: 2