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Territoriality and Related Problems in North America Hummingbirds
Frank A. Pitelka

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Notes on the Growth and Plumages of the Black Oyster-catcher
J. Dan Webster

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Succession in the Cathartine Dynasty
Loye Miller

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Notes on Some Races of the Rough-winged Swallow
Pierce Brodkorb

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The Status of the Skuas of the State of Washington
Gordon D. Alcorn

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Notes on Some Birds of Southeastern Arizona
Gale Monson

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Minutes of Cooper Club Meetings
Frances Carter, Robert W. Storer, and Jack C. Bloeker

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Back Matter (PDF)
The Condor

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Front Matter (PDF)
The Condor

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Nests in the Cottonwoods at Gustine, California
Hope M. Gladding

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Franklin Gull in Idaho
John W. Slipp

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Contacts of Ravens with Other Species
Leonard Wing

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Blue-winged Teal Nesting in Sacramento County, California
C. H. Freyschlag

The Scissor-tailed Flycatcher on the Florida Keys
George A. Petrides and Miriam P. Petrides

Blue-winged Teal with Young in Honey Lake Valley, California
J. S. Hunter

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Food of the California Clapper Rail
Frederick H. Test and Avery R. Test

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An Avifauna from Indian Kitchen Middens at Buena Vista-lake, California
Ida S. Demay

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The Yellow Rail and the Caspian Tern in New Mexico
Clarence Cottam, Clarence A. Scoter, and Richard E. Griffith

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Records of the Herring Gull, Sanderling, and Lark Bunting in Utah
William H. Behle

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White-tailed Kites Feeding on House Mice
R. M. Bond

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Shower Bathing of a Spotted Towhee
Alden H. Miller

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Notes on the Occurrence of Some Pelagic Birds Off San Diego County, California
Karl W. Kenyon

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Melospiza Melodia Virginis a Synonym of Melospiza Melodia Fallax
Joe T. Marshall

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Review of Loye Miller's Music in Nature""
Joe T. Marshall