List of birds of the Sonoran Desert
This list of birds of the Sonoran Desert includes all bird species endemic to the Sonoran Desert, and related areas; (a few species listed are only "native" and have a larger continental range). They are retrieved from the List of birds of Yuma County, Arizona, though not exclusively. Southwest region. The listed birds are based on the southern section of the Lower Colorado River Valley, from Yuma County and La Paz County, to the Bill Williams River, (and by extension to Needles, California/Topock, Arizona). The Colorado River borders the higher elevation Mojave  Desert to the northwest (Needles and Las Vegas), the Colorado Desert–(extension of Sonoran Desert) on the southwest and west, and the deserts of the Sonoran Desert to the east, the Yuma Desert, Lechuguilla Desert, and the Tule Desert. Bolded species are exclusive to the hottest deserts (southwestern Arizona; Baja, California; northern Mexico; and the Carrizo Plain). Southeast region. The southeast Arizona region is defined by: 1–the mountains of eastern Arizona, extending into western and southwestern New Mexico; 2–the sky islands defined by the NW–to–SE trending mountain ranges (formerly of the Basin and Range geology), also called  regionally the Madrean sky islands; and 3–the northernmost extension of the western spine mountain range of Mexico, the Sierra Madre Occidental (West). The result is a biome region particular to its: geographic locale, elevation, and proximity to flyways, namely for the mountains (of Mexico, the United States, and to Canada), and for the proximity to the Gulf of California, Gulf of Mexico, and the Pacific Ocean.