On 17 August 1974, G. McCaskie, R. Unitt, J. L. Dunn, and J. Butler discovered and collected a small sandpiper near the mouth of the Alamo River at the south end of the Salton Sea, Imperial County (McCaskie 1975). They identified the bird as a Rufous-necked Sandpiper (Calidris ruficollis); the specimen is now number 38887 at the San Diego Natural History Museum.