BIRDS—CORVIDAE—CYANOCITTA WOOBHOUSEII. 
585 
crescent, white streaked with blue ; behind it dull white; the sides tinged with brown. Length, 12.25; wing, 5 ; tail, 6.15; 
tarsus, 1.55. (2841.) 
I fab. —1'acific coast from Columbia river south. Not in the interior. 
The forehead and nasal feathers are uniform blue with the crown. The blue extends on the 
fore part of the back ; it is scarcely found on the rump, although the upper tail coverts are like 
the crown. There is no trace of blue on the belly, although a very faint wash is perceptible on 
the lower tail coverts. The blue streaks on and anterior to the pectoral collar are on the edges 
of the feathers, not the centres. 
I find considerable differences in size in different specimens of this bird. Thus, No. 8456, 
from San Francisco, measures nearly 14 inches ; the wing, 5.25 ; the tail, 6.40. No. 8455, 
(male,) from Tejon Pass, on the contrary, measures 10.40 inches; the wing, 4.65; the tail, 
5.50. The more southern specimens are smaller, and have the ashy brown of the back less 
glossed with blue. In most specimens the tail feathers are nearly truncate ; in 2841, however, 
they are quite acute. 
In young birds the head is generally like the back, with only a faint shade of blue. There 
is a brownish pectoral collar, but no streaks of blue. 
List of specimens. 
Catal. 
No. 
Sex. 
Locality. 
When collected. 
Whence obtained. 
Orig. 
No. 
Collected by— 
2641 
Oct. 11, 1834 
S. F. Baird. 
J. K. Townsend_ 
8458 
Jan. —, 1855 
Lt. Trowbridge_ 
T. A. Szabo __ 
5542 
J 
E. Samuels.____ 
169 
4225 
San Francisco, Cal._ 
Wint. 1853-4 
R. D. Cutts_ 
5902 
Dr. Cooper_ 
5903 
4949 
San Jose, Cal_ ____ 
A. J. Grayson_ 
6 
8457 
Presidio, Cal___ 
July 27, 1853 
Lt. Trowbridge__ 
3716 
Monterey, Cal_ 
Aug. 24, 1857 
W. Hutton. 
4565 
San Pasqual, Cal_ 
Major Emory_ 
13 
A. Schott_... 
8455 
J 
Tejon pass_ ----- 
Fort Tejon, Cal_ 
J. X. de Vesey___ 
8461 
San Felipe, Cal_ 
Major Emory_ 
8462 
Camp 149, Cal_ 
Mar. 16, 1854 
Lt. Whipple__ 
186 
Kenn. and Moll 
CYANOCITTA WOODHOUSEII, Baird. 
Woodhouse’s Jay. 
Sp. Ch.—S ize and general appearance of C. californica. Graduation of tail one inch. Blue, with a very obscure ashy 
patch on the back. Sides of the head and neck and incomplete pectoral collar, blue ; throat streaked with the same. Breast 
and belly uniform brownish ash glossed with blue ; under tail coverts bright blue. Sides of head, including lores, black, glossed 
with blue below; a streaked white superciliary line. Length, 11.50 ; wing, 5.35 ; tail, 6.10 ; tarsus, 1.60. 
Hab .—Central line of Rocky mountains to table lands of Mexico. 
This species has so close a relationship to C. californica that it may not seem proper to separate 
them, but the differences are readily perceptible in large series. All of the Rocky mountain 
July 1, 1858. 
74 b 
