Contents
A New Genus and Species of Philippine Bird
Dean Amadon
Temperature Regulation in the Red-tailed Tropic Bird and the Red-footed Booby
Thomas R. Howell and George A. Bartholomew
Celestial Orientation in Juvenal Waterfowl
William J. Hamilton III
The Birds of Southeastern Coahuila, Mexico
Charles A. Ely
Species Relationships and Adaptations for Sympatry in the Avian Genus Vireo
Terrell H. Hamilton
The Taxonomy of Pigeons
Richard F. Johnston
Notes and News
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
Nesting of the Bell Vireo in Oklahoma
Thomas G. Overmire
High-noon Songs
Loye Miller
Horned Lark Captured in Flight by Loggerhead Shrike
Ira L. Wiggins
Black Swift Breeds in Utah
Owen A. Knorr