lx 
INTRODUCTION 
Stellula calliope: Calliope Hummingbird. — Fairly common summer vis¬ 
itant on the mountains. 
Tyrannus verticalis : Arkansas Kingbird. — Common summer visitant to 
the valley. 
Tyrannus vociferans : Cassin Kingbird. — Fairly common winter visitant 
to the valley. 
Myiarchus cinerascens : Ash-throated Flycatcher. — Fairly common sum¬ 
mer visitant in the oak and foothill regions. 
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 ; migrant 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 traillii: 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 Homed Lark. 1 — Common resident of 
the lowland plains. 
Cyanocitta stelleri frontalis : Blue-fronted Jay. — Common resident of the 
mountains. 
Aphelocoma calif arnica : California Jay. — Common resident of the foothill 
regions. 
Corvus corax sinuatus: American Raven. — Frequent but irregular tran¬ 
sient visitant to the valley. 
Corvus americanus hesperis: 1 California Crow. — Common resident of the 
lowlands. 
Cyanocephalus cyanocephalus : Piilon Jay. — Irregular fall visitant to the 
mesas and mountains. 
Xanthocephalus xanthocephalus: Yellow-headed Blackbird.— Rare and 
irregular winter visitant. 
Agelaius phoeniceus neutralis: San Diego Redwing. — Common resident of 
the lowlands. 
Sturnella 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. 0. U. committee. (F. M. B.) 
