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The Condor, Volume 59, Number 3 (1957)

3 (May-June)


Torpidity in the White-Throated Swift, Anna Hummingbird, and Poor-Will. 145-155.
George A. Bartholomew, Thomas R. Howell, Tom J, Cade.
Natural History of the White-Tailed Kite in San Diego County, California. 156-165.
James R. Dixon, Ralph E. Dixon, James B. Dixon.
The Evolutionary and Taxonomic Significance of Sexual Dimorphism and Hybridization in Birds. 166-191.
Charles G. Sibley.
The Influence of a Hawk's Appetite on Mobbing. 192-194.
Frances Hamerstrom.
Determination of Age in the Spotted Towhee. 195-202.
John Davis.
Characteristics and Status of the Solitary Sandpiper in Utah. 203-206.
Richard D. Porter, John B. Bushman.
Notes and News. 214.
Cooper Society Meetings. 214-216.

From Field and Study

The Display of the Sickle-Billed Bird of Paradise. 207.
S. Dillon Ripley.
The Classification of the Oscine Passeriformes. 207-209.
Alexander Wetmore.
Unusual Early Winter Records From Oregon. 209.
Thomas D. Burleigh.
Migratory Flight of a Zonotrichia at 10,000 Feet Above Ground Level. 209-210.
Alden M. Miler.
Specimen of Parula Warbler From Southern California. 210.
Patrick J. Gould.
Two Records of Unprovoked Attack By Golden Eagles. 210-211.
Gordon W. Gullion.
Acadian Flycatcher, a New Bird for British Columbia. 211.
W. E. Clyde Todd.
A Second Record of the Yellow-Bellied Sapsucker From St. Croix, Virgin Islands. 211-212.
R. M. Bond.
A Further Observation on Torpidity in the Poor-Will. 212.
Robert C. Stebbins.
Rough-Winged Swallows of the Race Stuarti in Chiapas and British Honduras. 212-213.
Raymond A. Paynter, Jr..
Birds Mobbing a Snake Skin. 213.
Richard C. Banks.
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