INTRODUCTION lix 
Asio accipitrinus: Short-eared Owl. — Rare winter visitant to the low¬ 
lands. 
Syrnium occidentale : Spotted Owl. —Resident of the mountains ; perhaps 
fairly common, though not often met with. 
Megascops asio bendirei: California Screech Owl. — Common resident 
everywhere. 
Bubo virginianus pacificus: Pacific Horned Owl. — Fairly common resident 
in the oak region. 
Speotyto cunicularia hypogcea: Burrowing Owl. — Common resident of the 
mesas and lowlands. 
Glaucidium gnoma : Pygmy Owl. — Resident of the mountains ; perhaps 
fairly common, though by nature of its habits not often seen. 
Geococcyx californianus: Road-runner. — Fairly common resident of the 
mesas and foothills; rapidly becoming scarce. 
Coccyzus americanus occidentals : California Cuckoo.—Rare summer vis¬ 
itant to the willow bottoms. 
Ceryle alcyon: Belted Kingfisher. — Common migrant, appearing at re¬ 
servoirs and along streams. 
Dryobates villosus hyloscopus: Cabanis Woodpecker.—Fairly common in 
the mountains; resident. 
Dryobates pubescens turati : Willow Woodpecker. 1 — Fairly common in the 
willow regions; resident. 
Dryobates nuttallii: Nuttall Woodpecker. — Common resident in the oak 
and foothill regions ; visits the willow bottoms in fall and winter. 
Xenopicus albolarvatus: White-headed Woodpecker. — Fairly common re¬ 
sident in the higher mountains. 
Sphyrapicus varius nuchalis: Red-naped Sapsucker. — Rare midwinter vis¬ 
itant along the foothills. 
Sphyrapicus varius daggetti: 2 Sierra Sapsucker. — Common winter visitant, 
often about orchards and on pepper-trees along the city streets. 
Sphyrapicus thyroideus : Williamson Sapsucker. — Rare winter visitant on 
the mountains. 
Melanerpes formicivorus bairdi: Californian Woodpecker. — Common resi¬ 
dent of the oak regions. 
Melanerpes torquatus: Lewis Woodpecker.— Fairly common winter vis¬ 
itant to the oak regions. 
Colaptes cafer collaris: Red-shafted Flicker. — Common resident of both 
the mountains and lowlands. 
Phalcenoptilus nuttallii californicus: Dusky Poor-will. — Common resident 
of the foothills. 
Chordeiles acutipennis texensis : Texas Nighthawk. — Common summer vis¬ 
itant, chiefly on the dry mesas. 
Chcetura vauxii: Vaux Swift. — Common migrant along the foothills. 
A'eronautes melanoleucus : White-throated Swift. — Fairly common, except 
in midwinter, along the foothills and in the mountains. 
Trochilus alexandri: Black-chinned Hummingbird. — Common summer 
visitant along the foothills and in the mountain canyons. 
Calypte costce: Costa Hummingbird. — Common summer visitant to the 
dry mesas. 
Calypte anna: Anna Hummingbird. — Common resident anywhere. 
Selasphorus rufus: Rufous Hummingbird. — Common migrant every¬ 
where. 
Selasphorus alleni: Allen Hummingbird. — Fairly common spring migrant 
along the foothills. 
1 Not yet acted on by A. O. U. committee. (F. M. B.) 2 S. ruber of the Check-List. 
