74 PACIFIC COAST AVIFAUNA No. 11 
222 (378) Speotyto cunicularia hypogaea (Bonaparte) 
BurRROWING OWL 
Synonyms—Athene socialis; Athene cunicularia; Athene hypugaea; Speo- 
tyto hypogaea; Speotyto cunicularia; Strix cunicularia; Speotyto cunicularia 
obscura; Ground Owl; Billy Owl. 
Status—Common resident of treeless areas below the Transition zone both 
east and west of the Sierras, excluding certain rocky portions of the southeastern 
deserts, and the northwest humid coast belt. Occurs regularly on several of the 
Santa Barbara group of islands; recorded also from the Farallones (W. E. Bry- 
ant, Proce. Calif. Acad. Sei., 2nd ser., 1, 1888, p. 45; Dawson, Condor, xm, 1911, 
p. 180). Recorded west of the Sacramento Valley and north of Marin and Sono- 
ma counties only from the vicinity of Mount Saint Helena (W. K. Fisher, Con- 
dor, 1, 1900, p. 136), and Upper Lake, Lake County (F. Stephens, Auk, xi, 1895, 
p. 372) ; both these localities are interiorwards from the humid coast strip proper, 
from which we have no records north of Marin County. 
223 (379a, part) Glaucidium gnoma californicum Sclater 
CALIFORNIA PigmMy Own 
Synonyms—Athene imfuscata; Glaucidium passermum var. californicum, 
part; Glaucidium gnoma, part; Glaucidium gnoma vigilante; Glaucidium gnoma 
pinicola; Rocky Mountain Pigmy Owl; Sierra Pigmy Owl. 
Status—Fairly common resident along the Sierra Nevada, and San Gabriel 
and San Bernardino mountains. Probably breeds chiefly in the Transition zone, 
dropping below to adjacent foothills in winter. The northernmost record sta- 
tion, believed to pertain to this subspecies, is west base of Mount Shasta (Town- 
send, Proc. U. S. Nat. Mus., x, 1887, p. 204) ; the southernmost is Escondido, San 
Diego County (Sharp, Condor, rx, 1907, p. 87). 
224 (379a, part) Glaucidium gnoma grinnelli Ridgway 
Coast Piemy Own 
Synonyms—Glaucidium californicum; Glaucidium gnoma, part; Glaucidiwm 
infuscatum; Glaucidium passerinum californicum, part; Glaucidium gnoma. cal- 
ifornicum, part; California Pigmy Owl, part. 
Status—Fairly common resident of humid coast Transition, from Little Sur 
River, Monterey County (J. Grinnell, Condor, tv, 1902, p. 127) northward 
through the Santa Cruz, Marin and Humboldt districts. Recorded east, north of 
the San Francisco Bay region, to the inner coast ranges: Mount Saint Helena 
(W. K. Fisher, Condor, 1, 1900, p. 136), and Mount Sanhedrin (Stone, Proce. 
Aead. Nat. Sci. Phila., 1904, p. 581). This form oceurs possibly south as far as 
Santa Margarita, San Luis Obispo County (Swarth, Condor, xi, 1911, p. 163). 
225 (381) Micropallas whitneyi whitneyi (Cooper) 
ArIzoNA ELF Own 
Synonyms—Micrathene whitneyi; Whitney Owl. 
Status—Resident in a restricted tract of giant cactuses on the California 
