Common Ravens Corvus corax are familiar roadside birds in much of the southwestern United States. I counted ravens during nearly 5500 miles of travel through the Mohave Desert of southern Nevada (Clark County) and adjacent California (San Bernardino County) in 1967–1969. Observations were limited to areas below 4500 feet in Lower Sonoran desert away from major waterways and irrigated land. Data were divided into four time periods (table 1) and into those obtained along major routes and those along lightly used roads.