164 PACIFIC COAST AVIFAUNA No. 11 
of the humid coast belt. Occurs sparingly at lower levels in adjacent valleys in 
winter, south to Fort Tejon, Kern County (J. Grinnell, Condor, x, 1908, p. 30). 
512 (738a) Penthestes gambeli baileyae (Grinnell) 
BartLey CHICKADEE 
Synonyms—Parus montanus, part; Parus gambeli, part; Parus gambeli 
baileyae; Mountain Chickadee, part. 
Status—Common resident of Transition and Canadian zones from Mount 
Pinos, Ventura County (J. Grinnell, Auk, XXII, 1905, p. 391) southeastward 
through the San Gabriel, San Bernardino, San Jacinto and Santa Rosa moun- 
tains to the Cuyamaca Mountains (J. G. Cooper, Amer. Nat., vi, 1874, p. 17; 
Mus. Vert. Zool.) ; also on the Santa Ana Mountains, Orange County (Mus. Vert. 
Zool.), and at head of Big Creek, Santa Lucia Mountains, Monterey County 
(Jenkins, Condor, vill, 1906, p. 129; specimens, now in Mailliard coll., determ- 
ined by me). Occurs in adjacent valleys in winter in small numbers, as at Pasa- 
dena and Pomona; also along the Mohave River at Victorville (J. Mailliard and 
J. Grinnell, Condor, vir, 1905, p. 102). 
513 (741) Penthestes rufescens rufescens (Townsend) 
CHESTNUT-SIDED CHICKADEE 
Synonyms—Parus rufescens, part; Parus rufescens neglectus, part; Chest- 
nut-backed Chickadee. 
Status—Common resident of Transition and Canadian zones in the north- 
ern humid coast belt; west to the Siskiyou Mountains (M. P. Anderson and J. 
Grinnell, Proc. Acad. Nat. Sci. Phila., 1903, p. 18), Helena, Trinity County (L. 
Kellogg, Condor, x1, 1911, p. 121), and casually to west base of Mount Shasta 
(Townsend, Proce. U. 8. Nat. Mus., x, 1887, p. 229); south to coast of Sonoma 
County in vicinity of Freestone (Mus. Vert. Zool.), and interiorly to Mount 
Saint Helena (W. K. Fisher, Condor, 1, 1900, p. 138). 
514 (741a) Penthestes rufescens neglectus (Ridgway) 
Marin CHICKADEE 
Synonyms—Parus rufescens, part; Parus rufescens neglectus, part ; Califor- 
nia Chickadee, part. 
Status—Common resident of humid Transition in Marin County, from Ni- 
casio west to Point Reyes (Mus. Vert. Zool.). The range of this form is stated 
by J. Mailhard (Condor, x, 1908, p. 182) to be separated from the range of P. r. 
rufescens, at least along the coast, by a well-defined interval of associationally 
unfavorable territory. 
515 (741b) Penthestes rufescens barlowi (Grinnell) 
Santa Cruz CHICKADEE 
Synonyms—Parus rufescens, part; Parus rufescens neglectus, part; Parus 
rufescens barlowi; Parus barlowi; Penthestes barlowi; California Chickadee, 
part; Barlow Chickadee; Chestnut-backed Titmouse. 
