INTRODUCTION Ixiii 



}\'ilsonia 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 jiasadenense : 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. 



Caiherpes mexicanus 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. 



Olbiarchilus hiemalis pacificus : Western AVinter 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 ornicus: 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 californica : 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 : l Monterey Hermit Thrush. Rare spring 

 migrant over the mesas. 



1 Not yet acted on by A. O. U. committee. (F. M. B.) 



