Rocky Mts, Cascade Mts and isolated ranges of western North America from south-western Canada (eastern slopes of interior British Columbia, southern and east through mountains of south-western Alberta), southern in USA to central and eastern Washington and Olympic Peninsula, Idaho, Montana, Wyoming, western and north-eastern Oregon (likely across the state), northern and east-central California, Nevada, Utah and Colorado to southern California, Arizona and New Mexico; also, in northern Mexico, irregularly occurring population in Sierra San Pedro Martír (northern Baja California) and isolated population at Cerro Potosí (Nuevo León).
Population
Estimated population is 1,000,000 (2010).
Clark's Nutcracker (Nucifraga columbiana) [XC581884]
by Timothy Marquardt from Flat Iron Trail, Deschutes County, Oregon, United States (call)
Clark's Nutcracker (Nucifraga columbiana) [XC570262]
by Thomas Magarian from Lost Cannon Mountain, Mono County, California, United States (call)
Subspecies
No subspecies.
Probably derived from a Siberian form of Spotted Nutcracker (Nucifraga caryocatactes) which crossed the Bering land-bridge, perhaps as relatively recently as 1.5-2 million years ago.
BirdLife International Species Factsheet