Ixii INTRODUCTION 



Piranga ludovidana: Western Tanager. Common summer visitant on 



the mountains ; common migrant on the mesas. 

 Progne subis hesperia : Western Martin. Fairly common summer visitant 



to the mountains. 

 Petrocheiidon lunifrons : Cliff Swallow. Abundant migrant and summer 



visitant to the valley. 

 Hintndo erythrogastra : Barn Swallow Fairly common migrant through 



the valley. 

 Tachycineta bicolor : Tree Swallow. Common resident of the lowlands, a 



few wintering. 



Tachycineta thcdassina lepida : Northern Violet-green Swallow. Common 



summer visitant to the mountains ; abundant migrant through the valley. 



Stelgidopteryx serripennis : Rough-winged Swallow. Fairly common sum- 



mer visitant to the mesas. 

 Ampelis cedrorum : Cedar Waxwing. Common winter visitant to the 



valley. 

 Phainopepla nitens : Phainopepla. Common summer visitant to the 



mesas. 

 Lanius hidovicianus gambeli : California Shrike. Common resident of the 



valley. 

 Vireo gilvus swainsoni: 1 Western Warbling Vireo. Abundant migrant 



through the valley ; fairly common summer visitant locally. 

 Vireo solitarius cassinii : Cassin Yireo. Common summer visitant in the 



mountain canyons. 

 Vireo huttoni : Hutton Vireo. Fairly common resident of the oak 



regions. 



Vireo jjusillus : Least Vireo. Common summer visitant to the valley. 

 Helminthophila rubricapilla gutturalis : Calaveras Warbler. Fairly com- 



mon migrant through the valley. 

 Helminthophila celata lutescens : Lutescent Warbler. Common migrant 



through the valley ; rare summer visitant to the foothills and canyons. 

 Helminthophila celata sortlida : Dusky Warbler. -- Common fall visitant to 



the valley and foothills. 

 Dendroifti nxfim morcoini :'- Western Yellow Warbler. Common sum- 



mer visitant to the willow bottoms and mountain canyons. 

 Dendroica coronata : Myrtle Warbler. - - Rare midwinter visitant to the 



valley. 

 Dendroica auduboni : Audubon Warbler. Abundant winter visitant 



everywhere. 

 Dendroica nigrescent* : Black-throated Gray Warbler.-- Common summer 



visitant ti> the mountains; migrant through the valley. 

 Drtidrtiifti intrust IK! i : Townsend Warbler. --Fairly common migrant over 



tin- mesas and footliills. 

 l)> Hdmifti tn-fitlt tifidis : Hermit Warbler. Fairly common migrant along 



the foothills and mesas. 

 < > utfili/jiis // //</< i : Tolmie Warbler. Fairly common migrant along the 



foothills. 

 Geothlypis Irifhu* tiri-tlti: Pacific Yellow-throat. Common resident of 



tlie lo\\ lands and migrant along the foothills. 



Geothlypis ir'n-lm* si'ir/iirn/ii : :; Tnle Yellow-throat. Common resident of 

 the lowlands. 



i >-iu rirDis longicauda: Long-tailed Chat. Fairly common summer 

 visitant to the \\ilh.w liottoms. 



r /;7c/.s-(,f Clierk-List. (F. JM. B.) 

 1 1. a StiVO of Check-List. (F. M. ]',. ) 

 * Not yet acted 011 by A. O. U. committee. (F. M. B.) 



