Contents
Torpidity in the White-throated Swift, Anna Hummingbird, and Poor-will
George A. Bartholomew, Thomas R. Howell, and Tom J. Cade
Natural History of the White-tailed Kite in San Diego County, California
James R. Dixon, Ralph E. Dixon, and James B. Dixon
The Evolutionary and Taxonomic Significance of Sexual Dimorphism and Hybridization in Birds
Charles G. Sibley
The Influence of a Hawk's Appetite on Mobbing
Frances Hamerstrom
Characteristics and Status of the Solitary Sandpiper in Utah
Richard D. Porter and John B. Bushman
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
The Display of the Sickle-billed Bird of Paradise
S. Dillon Ripley
The Classification of the Oscine Passeriformes
Alexander Wetmore
Unusual Early Winter Records from Oregon
Thomas D. Burleigh
Specimen of Parula Warbler from Southern California
Patrick J. Gould
Two Records of Unprovoked Attack by Golden Eagles
Gordon W. Gullion
A Further Observation on Torpidity in the Poor-will
Robert C. Stebbins
Rough-winged Swallows of the Race Stuarti in Chiapas and British Honduras
Raymond A. Paynter Jr.
Birds Mobbing a Snake Skin
Richard C. Banks