xlviii 
INTRODUCTION 
Sitta carolinensis aculeata: Slender-billed Nuthatch. — Common. 
Sitta canadensis: Red-breasted Nuthatch. — Common fall migrant; does 
not seem to be so abundant in spring. 
Parus atricapillus occidentalis : Oregon Chickadee. —'Very common resi¬ 
dent. 
Parus rufescens : Chestnut-backed Chickadee. — Common resident. 
Psaltriparus minimus: Bush-Tit. — Abundant resident. 
Regulus satrapa olivaceus : Western Golden-crowned Kinglet. — Abundant 
winter resident. 
liegulus calendula : Ruby-crowned Kinglet. — Common migrant. 
Myadestes townsendii: Townsend Solitaire.—Seen once or twice in the 
residence part of the city. 
Hylocichla ustulata: Russet-backed Thrush. — Common in the city and 
wooded thickets along the river. 
Hylocichla guttata: Alaska Hermit Thrush. — A few seen during migra¬ 
tions. 
Merula migratoria propinqua : Western Robin. — Abundant; a few win¬ 
ter. 
Ixoreus ncevius : Varied Thrush. — Abundant winter resident. 
Sialia mexicana occidentalis : Western Bluebird. —Common. 
LIST OF WATER BIRDS OF SAN FRANCISCO BAY. 
By William H. Kobb^. 
JEchmophorus occidentalis: Western Grebe.—Abundant throughout the 
winter and spring. 
Colymbus holboellii: Holbcell Grebe. — Rare; two winter visitants taken. 
Colymbus auritus: Homed Grebe. — Common winter visitant. 
Colymbus nigricolljs californicus : American Eared Grebe. — Winter vis¬ 
itant, most commonly at Oakland and Alameda. 
Podilymbus podiceps: Pied-billed Grebe. — Common in the fall; probably 
resident in favorable situations. 
Gavia imber : Loon. — Spring migrant. 
Gavia pacijica : Pacific Loon. — Common winter visitant. 
Gavia lumme: Red-throated Loon. — Winter visitant; abundant about 
Oakland. 
Cyclorrhynchuspsittaculus : Paroquet Auklet. — Winter visitant. 
Synthliboramphus antiquus: Ancient Murrelet. — Winter visitant. 
Brachyramphus marmoratus : Marbled Murrelet. — Taken off Goat Island 
by Bryant. 
XJria troile calif ornica: California Murre. — Visitant; mainly fall, winter, 
and spring ; probably occurs in summer. 
Stercorarius parasiticus : Parasitic Jaeger. — Fall migrant. 
Rissa tridactyla pollicaris : Pacific Kittiwake. — Winter visitant. 
Larus delaiparensis: Ring-billed Gull. — Common about Oakland from 
the last of autumn until summer. 
Larus glaucus: Glaucous Gull-One noted by Cooper ( Proc . Cal. Acad¬ 
emy of Sciences , iv. 9-10) and one seen by Kobb£. 
Larus glaucescens: Glaucous-winged Gull. — Abundant winter visitant. 
Larus occidentalis : Western Gull. — Abundant resident. 
Larus argentatus : Herring Gull. — Abundant winter visitant. 
Larus vegai: Vega Gull. — Abundant winter visitant. 
Larus californicus : California Gull. — Abundant resident. 
Larus brachyrhynchus : Short-billed Gull. — Abundant from November to 
February. 
