Ixii INTRODUCTION 



Piranga ludoviciana : 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. 

 Petrochelidon lunifrons : Cliff Swallow. — Abundant mig'rant . and summer 



visitant to the valley. 

 Hirundo erythrogastra : Barn Swallow — Fairly common migrant through 



the valley. 

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



feAV wintering. 

 Tachycineta thalassina lepida : Northern Violet-green Swallow. — Common 



summer visitant to the mountains ; abundant migrant thi'ough the valley. 

 Stelgidopteryx serripe^inis : 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 ludovicianus gamheli : California Shrike. — Common resident of the 



valley. 

 Yireo gilvus swainsoni:^ Western Warbling Vireo. — Abimdant 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 pusillus : Least Vireo. — Common siimmer visitant to the valley. 

 Hebninthophila rubricajnlla giitturalis : Calaveras Warbler. — Fairly com- 

 mon migrant through the valley. 

 HelminthojMa celata hitescens : Lutescent Warbler. — Common migrant 



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

 Helminthophila celata sordida : Dusky Warbler. — Common fall visitant to 



the valley and foothills. 

 Dendroica a^stiva morcomi : ^ 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 aiiduboni : Audubon Warbler. — Abundant w inter visitant 



everywhere. 

 Dendroica nigrescens : Black-throated Gray Warbler. — Common summer 



visitant to the mountains ; migrant through the valley. 

 Dendroica townsendi : Townsend Warbler. — Fairly common migrant over 



the mesas and foothills. 

 Dendroica occidentalis : Hermit Warbler. — Fairly common migrant along 



the foothills and mesas. 

 Geothlyjns tolmiei : Tolmie Warbler. — Fairly common migrant along the 



foothills. 

 Geothlypis trichas arizela : Pacific Yellow-throat. — Common resident of 



the lowlands and migrant along the foothills. 

 Geothlypis trichas scirpicola : -^ Tule Yellow-throat. — Common resident of 



the lowlands. 

 Icteria virens longicauda: Long-tailed Chat. Fairly common sumftier 



visitant to the willow bottoms. 



1 rfreo fir?7TOS of Check-List. (F. M. B.) 



2 X). ifstiva of Check-List. (F. M. B.) 



» Not yet acted ou by A. O. U. committee. (F. M. B.) 



