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The Role of Learning in the Feeding Behavior of Black-chinned Hummingbirds
Frank Bene

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Differentiation of the Scrub Jay, Aphelocoma Coerulescens, in the Great Basin and Arizona
Frank A. Pitelka

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The Hawaiian Goose, Its Distribution and Reduction in Numbers
Paul H. Baldwin

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Notes and News
The Condor

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Minutes of Cooper Club Meetings
The Condor

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Back Matter (PDF)
The Condor

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Front Matter (PDF)
The Condor

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California Condors in San Luis Obispo County, California
Halbert T. Johnson

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Notes on Raptors of the Boulder Area, Colorado
Malcolm T. Jollie

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Diving Habits of the Shoveller Duck
Clarence Cottam

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Foster Parentage of a Mourning Dove in the Wild
Johnson Neff

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English Sparrows Versus Robins
Frank Richardson

Kingfisher Nesting near Whittier, California
J. H. Comby

Snow Bunting in New Mexico
Donald F. Hoffmeister

Lawrence Goldfinch Eating Egg of Mourning Dove
James L. Ortega

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Another Southern California Record of the Tennessee Warbler
C. V. Duff