- 
1915 BIRDS OF CALIFORNIA 97 
291 (478a) Cyanocitta stelleri frontalis (Ridgway) 
BLUE-FRONTED JAY 
Synonyms—Cyanocitta stelleri, part; Cyanura stelleri, part; Cyanura stel- 
leri frontalis, part; Cyanocorax stellert. 
Status—Common resident of Transition and Canadian along the whole 
length of the Sierra Nevada, and on the mountains of southern California from 
those of Ventura County southeast to the Cuyamaca Mountains in San Diego 
County ; also in the Warner Mountains, Modoc County (Mus. Vert. Zool.) and in 
the northern inner coast ranges from Siskiyou County south to Mount Saint 
Helena (W. K. Fisher, Condor, m, 1900, p. 137), and Mount George, east of 
Napa Valley (A. O. U. Check-List, 3rd ed., 1910, p. 223) ; also in vicinity of 
Santa Margarita, San Luis Obispo County (Swarth, Condor, xi, 1911, p. 163). 
Recorded as reaching the coast of Sonoma County (J. Mailliard, Condor, x, 1908, 
p. 134; Mus. Vert. Zool.), but otherwise replaced in the humid coast belt by C. 
s. carbonacea. Westernmost records of frontalis in extreme northern California 
are Walker P. O., Siskiyou County (M. P. Anderson and J. Grinnell, Proc. Acad. 
Nat. Sci. Phila., 1903, p. 9), and Helena, Trinity County (L. Kellogg, Condor, 
xii, 1911, p. 119) ; intergradation with carbonacea takes place in about the longi- 
tude of those places. Not recorded from the desert ranges southeast of the 
Sierra Nevada. There is a partial winter movement down into the western foot- 
hills of the Sierras, and even out onto the valleys sporadically; thus frontalis 
has been recorded in winter from Santa Barbara (Streator, Orn. & Ool., x1, 
1886, p. 66), Paicines, San Benito County (J. and J. W. Mailliard, Condor, m, 
1901, p. 124), Stockton (Sampson, Condor, m, 1901, p. 37), and Marysville 
(Belding, Proc. U. S. Nat. Mus., 1, 1879, p. 422). 
292 (478e) Cyanocitta stelleri carbonacea Grinnell 
Coast Jay 
Synonyms—Cyanocitta stelleri, part; Cyanura stelleri, part; Cyanura stel- 
levi frontalis, part; Steller Jay. 
Status—Common resident of the Transition zone in the humid coast belt 
from southern Monterey County north to the Oregon line. Recorded east to Sis- 
kiyou Mountains (M. P. Anderson and J. Grinnell, Proc. Acad. Nat. Sci. Phila., 
1903, p. 9), and to mountains on west side of Napa Valley (A. O. U. Check-List, 
3rd ed., 1910, p. 223) ; also east of San Francisco Bay, at Berkeley (J. Grinnell, 
Condor, xv1, 1914, p. 33), in Calaveras Valley, Santa Clara County (Carriger 
and Ray, Condor, xm, 1911, pp. 73, 74), and on Mount Diablo (Mus. Vert. Zool.). 
Recorded in winter east at the south to the Gabilan Mountains, San Benito 
County (A. O. U. Cheek-List, loc. cit.). A hiatus exists in the range of this sub- 
species along the north coast in Sonoma County, from the vicinity of Freestone 
to Cazadero, this interval being occupied by the race frontalis which appears to 
have pushed its way westward from the interior through the humid coast belt 
(series of specimens in Mus. Vert. Zool.). 
