Contents
A Hybrid Jay from Chiapas, Mexico
Frank A. Pitelka, Robert K. Selander, and Miguel Alvarez Toro
The Bird of the Revilla Gigedo Islands, Mexico
Bayard H. Brattstrom and Thomas R. Howell
Pterlyography and Molt of the Allen Hummingbird
Elmer C. Aldrich
The Annual Reproductive Cycle of the California Gull I. Criteria of Age and the Testis Cycle
David W. Johnston
Notes and News
The Condor
Cooper Society Meetings
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
An Ancient Murrelet in Northern in Northeastern Nevada
Gordon W. Gullion
Prolonged Incubation by an Anna Hummingbird
Junea W. Kelly
A Fossil Magpie from the Pleistocene of Texas
Alden H. Miller and Robert I. Bowman
Interspecific Relations Between Goshawks and Ravens
Francis S. Williamson and Robert Rousch
White-winged Scoter in Texas
Walter W. Dalquest
The Incubation Period of the Clapper Rail
Richard F. Johnston
Some New Bird Records from Brewster County, Texas
Keith L. Dixon and O. C. Wallmo
Palm Warbler at Point Reyes, California
Charles D. Fisher