Breeds south-western Canada (south-eastern British Columbia, south-western and extreme southern Alberta and southern fringe of Saskatchewan), western USA from central Washington and Oregon and most of California (except south-west) east to western North Dakota and South Dakota, north-western Nebraska, east-central Colorado, northern New Mexico and Arizona, and extreme north-western Mexico (north-western Baja California). Migrates to south-eastern Arizona south through western Mexico to north-western Oaxaca.
 
Population
Estimated population is 2,300,000 (2010).
Lazuli Bunting (Passerina amoena) [XC483011]
by Ron Overholtz from Big Pines Meadow, San Gabriel Mountains, Los Angeles County, California, United States (song)
Lazuli Bunting (Passerina amoena) [XC570661]
by id from Cucomungo Canyon, Inyo County, California, United States (song)
Subspecies
No subspecies.
Genus sometimes placed in family Emberizidae. May form a superspecies with Indigo Bunting (Passerina cyanea) and often treated as conspecific. The two hybridize extensively.