479 
MAGPIES, JAYS, CROWS: ARIZONA JAY 
ARIZONA JAY: Aphelocoma sieberi arizonae (Ridgway) 
Description. — Length: About 11.5-13 inches, wing 6.1-6.5, tail 5.6-6.1, gradu¬ 
ated for .5-.6, bill 1, tarsus 1.5-1. 6 . Wings longer than tail. Adults: Upperparts 
wholly blue, including wings and tail, dull blue on back; sides of head blackish, under 
parts bluish gray, paler but not streaked on throat , bluest on breast, whitening on 
NEW MEXICO 
Map 35. Arizona Jay 
Shaded areas show general range. Triangles mark breeding and yearlong 
records 
belly; bill black, sometimes irregularly patched with whitish. Young in juvenal 
plumage: Upperparts dull gray, with blue wings and tail; underparts much like adult. 
Bill mainly flesh-colored below. 
Range. —Presumably resident in Upper Sonoran Zone in southeastern Arizona, 
southwestern New Mexico south to Chihuahua and Sonora. 
State Records. —As its namea implies, the principal home of the Arizona Jayin 
in that State, whence it enters a short distance into extreme southwestern New 
