INTRODUCTION 
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Wilsonia pusilla pileolata: Pileolated Warbler. — Abundant migrant 
through the valley; common summer visitant to the willow bottoms. 
Anthus pensilvanicus: American Pipit. — Common winter visitant to the 
lowlands. 
Cinclus mexicanus: American Dipper. — Rare resident of the mountain 
canyons. 
Mimus polyglottos leucopterus: Western Mockingbird. — Abundant resident 
of the valley, especially on the mesas. 
Toxostoma redivivum pasadenense: Pasadena Thrasher. — Common resi¬ 
dent of brush lands anywhere. 
Heleodytes brunneicapillus: Cactus Wren. — Rare resident locally on the 
mesas. 
Salpinctes obsoletus: Rock Wren. — Fairly common winter visitant to the 
valley. 
Catherpes mexicdnus punctulatus: Dotted Canyon Wren. — Fairly common 
resident of the mountain canyons. 
Thryomanes bewickii charienturus : San Diegan Wren. — Common resident of 
the mountains ; common winter visitant to the brush lands in the valley. 
Troglodytes aedon parkmanii: Parkman Wren.—Fairly common summer 
visitant everywhere. 
Olbiorchilus hiemalis pacijicus: Western Winter Wren.—Rare midwinter 
visitant to the mountains. 
Cistothorus palustris paludicola: Tule Wren.—Common resident of the 
lowland marshes. 
Certhia familiaris zelotes: Sierra Creeper. — Fairly common resident on 
the mountains. 
Sitta carolinensis aculeata : Slender-billed Nuthatch. Fairly common resi¬ 
dent on the mountains. 
Sitta canadensis : Red-breasted Nuthatch. — Irregular winter visitant to 
the mountains. 
Sitta pygmcea: Pygmy Nuthatch. — Fairly common resident of the higher 
mountains. 
Parus inornatus : Plain Titmouse. — Common resident of the oak regions. 
Parus gambeli: Mountain Chickadee. — Common resident on the moun¬ 
tains. 
Chamcea fasciata: Wren-Tit. — Common resident of brush lands every¬ 
where. 
Psaltriparus minimus calif or nicus: California Bush-Tit. — Abundant resi¬ 
dent of the oak regions of the valley and foothills. 
Begulus satrapa olivaceus: Western Golden-crowned Kinglet.— Rare mid¬ 
winter visitant to the mountains and mesas. 
Begulus calendula: Ruby-crowned Kinglet. — Abundant winter visitant 
everywhere. 
Polioptila ccerulea obscura: Western Gnatcatcher. — Common resident 
everywhere. 
Polioptila calif arnica: Black-tailed Gnatcatcher. — Rare resident locally 
on brushy mesas. 
Myadestes townsendii: Townsend Solitaire. — Fairly common winter visit¬ 
ant to the mountains. 
Hylocichla ustulata: Russet-backed Thrush. — Common summer visitant 
to the willow bottoms ; migrant along the foothills. 
Hylocichla guttata: Alaska Hermit Thrush. — Abundant winter visitant 
everywhere. 
Hylocichla guttata slevini: 1 Monterey Hermit Thrush. — Rare spring 
migrant over the mesas. 
1 Not yet acted on by A. O. U. committee. (F. M. B.) 
