Ix INTRODUCTION 



Stellula calliope : Calliope Humming-bird. — Fairly common summer vis- 

 itant on the mountains. 



Tyrannus verticalis : Arkansas King-bird. — Common summer visitant to 

 the valley. 



Tyrannus vociferans : Cassin King-bird. — Fairly common winter visitant 

 to the valley. 



Myiarchus cinerascens : Ash-throated Flycatcher. — Fairly common sum- 

 mer visitant in the oak and foothill reg-ions. 



Sayornis saya : 'Say Phoebe. — Common winter visitant to the valley. 



Sayornis nigricans semiatra : Western Black Phoebe. — Common resident 

 of the valley. 



Contopus borealis: Olive-sided Flycatcher. — Fairly common summer vis- 

 itant on the mountains ; mig-rant through the valley. 



Contopus richardsonii : Western Wood Pewee. — Common summer visitant 

 to the canyons and mountains. 



Empidonax difficilis : Western Flycatcher. — Common summer visitant to 

 the mountain canyons. 



Empidonax traiUii : Traill Flycatcher. — Common summer visitant to the 

 ■willow bottoms. 



Empidonax hammondi : Hammond Flycatcher. — Fairly common migrant 

 along the foothills. 



Empidonax griseus : Gray Flycatcher. — Rare winter visitant to the val- 

 ley. 



Otocoris alpestris actia : California Horned Lark.^ — Common resident of 

 the lowland plains. 



Cyanocitta stelleri frontalis : Blue-fronted Jay. — Common resident of the 

 mountains. 



Aphelocoma californica : California Jay. — Common resident of the foothill 

 regions. 



Corvus corax sinuatus : American Raven. — Frequent but irregular tran- 

 sient visitant to the valley. 



Corvus a mericanus hesperis : ^ California Crow. — Common resident of the 

 lowlands. 



Cyanocephalus cyanocephalus : Pinon Jay. — Irreg-ular fall visitant to the 

 mesas and mountains. 



X anthocephalus xanthocephalus : Yellow-headed Blackbird. — Rare and 

 irregular winter visitant. 



Agelaius phceniceus neutralis : San Diego Redwing. — Common resident of 

 the lowlands. 



Sturnelln magna neglecta : Western Meadowlark. — Common resident of 

 the valley. 



Icterus cucullatus nelsoni : Arizona Hooded Oriole. — Common summer vis- 

 itant to the mesas and canyons. 



Icterus bullocki : Bullock Oriole. — Common summer visitant to the valley. 



Scolecophagus cyanocephalus: Brewer Blackbird. — Abundant resident of 

 the lowlands and cultivated mesas. 



Coccothraustes vespertinus montanus : Western Evening Grosbeak. — Rare 

 and irregular winter visitant along the mountains. 



Carpodacus purpureus californicus : California Purple Finch. — Fairly 

 common winter visitant to the valley. 



Carpodacus cassini : Cassin Purple Finch. — Fairly common resident on the 

 higher mountains. 



Carpodacus mexicanus frontalis : House Finch. — Abundant resident of the 

 valley everywhere. 



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



