Yuma Proving Ground (YPG), a U.S. Army installation, is located in the Sonoran Desert of Yuma County, Arizona. Although several studies of birds have been conducted on YPG, the most recent inventory of the bird community was in 1982- 1985. We used point-transect surveys during 3 seasons in 2023-2024 to determine species presence and to compare species diversity and evenness across habitats. We made 2,898 observations of 94 bird species on YPG.