Contents
Territorial Behavior of the American Coot
Gordon W. Gullion
Gonadal and Fat Response to a 5:1 Ratio of Light to Darkness in the White-throated Sparrow
Albert Wolfson
The Birds of Southeastern Guatemala
Richard E. Tashian
A Review of the Pliocene Loons
Pierce Brodkorb
Publications Reviewed
The Condor
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
Second Record of the Vermilion Flycatcher in Colorado
John W. Flavin
Black-and-white Warbler, Dickcissel, and Tree Sparrow in Nevada
Warren M. Pulich and Gordon W. Gullion
Unusual Records from Western Colorado
A. Sidney Hyde
Records of the Coues Flycatcher and Chestnut-sided Warbler in California
Eugene Cardiff and Bruce Cardiff
The Incubation Patch in Males of the Suborder Tyranni
Kenneth C. Parkes
Record of Starling in Humboldt County, California
Fred A. Glover
Eastern Race of Yellow-bellied Sapsucker in Colorado
A. Lang Baily
Northern Record of Nesting of Red-necked Grebe
Urban C. Nelson
Duetting in the Crimson-breasted Barbet
William C. Dilger
The Incubation Period of the Hutton Vireo
Alden H. Miller
Recent Records of Some Hawaiian Honeycreepers
Lawrence P. Richards and Paul H. Baldwin