In the summer of 1977 there was a major flight of Roseate Spoonbills (Ajaia ajaja) into the lower Colorado River valley of Arizona and California (Witzeman et al., Am. Birds 31:1171-1176, 1977; McCaskie, Am. Birds 31:1188-1192, 1977). At least 12 individuals reached southern Nevada. The first reported was an immature on 5 June at the sewage ponds of the Nevada Test Site, Nye County (Castetter and Hill, West. Birds in press, 1979).
On 28 June I collected one of two individuals discovered on 27 June at the Overton Wildlife Management Area (OWMA), Clark County, by Area Manager Roy Horsely. The specimen was deposited in the University of Nevada, Reno Museum of Biology (UNMB 1838, immature female, ovary 16 × 6 mm, no molt, light fat, weight 307 g). Horsely observed one to two immatures at OWMA intermittently between 28 June and 31 July.