- Length: 10? inches
- Sturdy, dark bill
- Pale supercilium with darker cheeks
- Blue head, rump, wings and tail
- Gray-brown back
- Gray or white throat with dark lower border
- Grayish underparts
- Birds from Washington to California have brighter blue upperparts and
whiter throats than birds from the interior portion of the range
The Mexican Jay, an inhabitant of southeastern Arizona, is similar to
the Western Scrub-Jay but has uniform underparts lacking the white throat and
dark collar and more evenly colored upperparts. Pinyon Jay has blue
underparts and a shorter tail.
Length and wingspan from: Robbins, C.S., Bruun, B., Zim, H.S., (1966). Birds of North America. New York: Western Publishing Company, Inc.