An Olivaceous Flycatcher Myiarchus tuberculifer was discovered in the extensive grove of old date palms at Furnace Creek Ranch in Death Valley National Monument, Inyo County, California, on the afternoon of 23 November 1968. Furnace Creek Ranch is an isolated oasis with abundant water and vegetation and is surrounded for many miles in all directions by dry rocky hills and sterile alkaline flats. As such, it concentrates wandering birds, and a number of “vagrants” have been found there in recent years.