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Territoriality and Survival in the Plain Titmouse
Keith L. Dixon

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A Sea-cave Nest of the Black Swift
Ken Legg

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Life History of the Ruddy Ground Dove
Alexander F. Skutch

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The Annual Reproductive Cycle of the California Gull. Ii. Histology and Female Reproductive System
David W. Johnston

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The Effect of Diet on Photoperiod-induced Lipid Deposition in the White-throated Sparrow
Eugene P. Odum and James C. Major

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Nesting of the Blue-black Grassquit in Panama
Gladys C. Barnard

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Notes and News
The Condor

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Back Matter (PDF)
The Condor

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Front Matter (PDF)
The Condor

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Evidence of Double-brooding in Gambel Quail
Gordon W. Gullion

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A Fossil Guan from the Oligocene of South Dakota
Alexander Wetmore

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Occurrence of the Aleutian Tern and Rustic Bunting in the Aleutian Islands
Walter M. Weber

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A Transitorily Albinistic Robin Produces Normal Offspring
Jon Ghiselin

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Heavy Parasitization of Blue Grosbeaks by Cowbirds in California
Don Bleitz

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Breeding of the Short-billed Dowitcher on the Copper River Flats, Alaska
George E. Hudson

An Unusual Record of the Lesser Yellow-legs in the Pacific Ocean
Irvin O. Buss

Pinon Jays West of the Sierra Nevadan Divide in California
Peter A. Jordan

A Northern Nesting Station for the White-tailed Kite
Warren Labarthe

Blue Jay in New Mexico
Isabelle V. Bixler

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Additional Record of the Pinon Jay in Mexico
Robert K. Selander