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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 migrant 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 
few wintering. 
Tachycineta thalassina 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 ludovicianus gambeli: California Shrike. — Common resident of the 
valley. 
Vireo gilvus swainsoni: 1 2 3 Western Warbling Vireo. — Abundant migrant 
through the valley ; fairly common summer visitant locally. 
Vireo solitarius cassinii: Cassin Vireo. — Common summer visitant in the 
mountain canyons. 
Vireo huttoni: Hutton Vireo. — Fairly common resident of the oak 
regions. 
Vireo pusillus : 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 sordida : Dusky Warbler. — Common fall visitant to 
the valley and foothills. 
Dendroica cestiva morcomi: 2 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 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. 
Geothlypis 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: 8 Tule Yellow-throat. — Common resident of 
the lowlands. 
Icteria virens longicauda: Long-tailed Chat. Fairly common summer 
visitant to the willow bottoms. 
1 Vireo gilvus of Check-List. (F. M. B.) 
2 D. sestiva of Check-List. (F. M. B.) 
3 Not yet acted on by A. 0. U. committee. (F. M. B.) 
