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. 



Regulus calendula : Ruby-crowned King-let. Common migrant. 



Myatlestes 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 1 the river. 



Hylocichla gnttata : 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. KOBBE. 



^Echmophorus occidentalism: Western Grebe. Abundant throughout the 

 winter and spring'. 



Colymbus holbcctlii : Holboell Grebe. Rare ; two winter visitants taken. 



Colymbus auritns : Horned Grebe. Common winter visitant. 



Colymbus nigricollis calif ornicus : 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 irnber : 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. 



Uria troile californica : California Murre. Visitant ; mainly fall, winter, 

 and spring ; probably occurs in summer. 



Sterrnnirius parasiticus : Parasitic Jaeger. - - Fall migrant. 



Kissa tridactyla poilicaris : Pacific Kittiwake. Winter visitant. 



Larus delawarensis : 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 S<-/f'iirfs, iv. 0-10) and one seen by Kobbe*. 



Larus glaucpscms : ( iLuicous-winged Gull. Abundant winter visitant. 



Lnriis occidentalis : Western Gull. -- Abundant resident. 



Luriis iir^t -ntntiifi : Herring Gull.-- Abundant winter visitant. 



Larus vcytc : Vega Gull. Abundant winter visitant. 



Larus ca/ifornicus : California Gull. Abundant resident. 



Larus brachyrhynchus : Short-billed Gull. Abundant from November to 

 February. 



