1915 BIRDS OF CALIFORNIA 147 
180) I have examined and found to be exactly like females of brewsteri in first 
winter plumage. 
449 (652c) Dendroica aestiva brewsteri Grinnell 
CALIFORNIA YELLOW WARBLER 
Synonyms—Sylvicola aestiva; Dendroica aestiva; Dendroica aestiva mor- 
comi; Dendroica aestiva sonorana, part; Western Yellow Warbler; Sonora Yel- 
low Warbler, part. 
Status—Common migrant nearly throwghout the state; summer visitant to 
much of the area west and northwest of the Sierran divides, including also the 
Modoe region south to Lake Tahoe, and the whole San Diegan district. Breeds 
most numerously in suitable parts of the Upper Sonoran and Transition zones. 
The preferred association is deciduous riparian growth, so that the matter of rel- 
ative aridity of the including region counts but little. No record from any of 
the islands except the Farallones (W. E. Bryant, Proce. Calif. Acad. Scei., 2nd ser., 
1, 1888, p. 48). 
450 (652b) Dendroica aestiva rubiginosa (Pallas) 
ALASKA YELLOW WARBLER 
Status—Fairly common late spring and fall migrant: Mountain Spring, San 
Diego County, May 11 (Oberholser, Auk, x1v, 1897, p. 78), Haywards, Alameda 
County, September 8 to October 8 (J. Grinnell, Condor, m, 1901, p. 15; Emer- 
son, Condor, vi, 1905, p. 113) ; Witch Creek, San Diego County, May 3 to 11, 
and October 12 (Bishop, Condor, vir, 1905, p. 1483) ; Imperial, Imperial County, 
May 11 (specimen in Mus. Vert. Zool.) ; Dos Palmos Spring, Santa Rosa Moun- 
tains, Riverside County, May 26, 27 and 31 (J. Grinnell and Swarth, Univ. Calif. 
Publ. Zool., x, 1913, p. 298) ; Pilot Knob, Colorado River, Imperial County, May 
9 and 14 (J. Grinnell, Uniy. Calif. Publ. Zool., xi, 1914, p. 200). 
451 (654) Dendroica caerulescens caerulescens (Gmelin) 
BLACK-THROATED BLUE WARBLER 
Status—But one record: Farallon Islands, November 17, 1886 (W. E. Bry- 
ant, Proc. Calif. Acad. Sci., 2nd ser., 1, 1888, p. 48). The specimen, a female, is 
now in the Emerson collection (no. 669A). 
452 (655, part) Dendroica coronata hooveri McGregor 
ALASKA MyrtTLeE WARBLER 
Synonyms—Dendroica coronata; Hoover Warbler; Yellow-crowned Warb- 
ler; Yellow-rumped Warbler. 
Status—Fairly common winter visitant and spring migrant in west-central 
California; recorded south to Santa Barbara Island (J. Grinnell, Rep. Bds. 
Santa Barbara Ids., 1897, p. 7), San Clemente Island (Linton, Condor, x1, 1909, 
p. 194), and Los Angeles (Swarth, Condor, m, 1900, p. 40) ; east in central Cali- 
fornia to Murphys, Calaveras County (Ridgway, Bull. Nutt. Orn. Club, m1, 1878, 
p. 65), and Drytown, Amador County (J. and J. W. Mailliard, MS). 
