Contents
Light Versus Activity in the Regulation of the Sexual Cycles of Birds: the Role of the Hypothalamus
Albert Wolfson
A Group of Bat-eating Duck Hawks
Kenneth E. Stager
The Passing of Coragyps Shastensis Miller
Loye Miller
Voice in the Brown Towhee
Charles W. Quaintance
Notes and News
The Condor
Minutes of Cooper Club Meetings
Frances Carter, Sherwin F. Wood, and Irwin D. Nokes
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
A New Record of the Semipalmated Plover in Nevada
Glen Christensen and Thomas Trelease
Macfarlane Screech Owl in Harney County, Oregon
Stanley G. Jewett
English Sparrow Eaten by Bullfrog
Fred H. Lueders
Nesting of Band-tailed Pigeons at Altadena, California
Walter I. Allen
Additional Records of the Western Mockingbird in Oregon
Clarence A. Sooter
Prairie Falcon Parasitizing a Marsh Hawk
Henry E. Parmenter
Mountain Plover in Solano County, California
Emerson A. Stoner
The Rocky Mountain Creeper in California
Kenneth E. Stager
Scarlet Tanager at Boulder, Colorado
Gordon Alexander
Some Birds Recorded in Nuevo Leon, Mexico
George Miksch Sutton and Thomas D. Burleigh
Barn Owls Nesting at Kanab, Utah
William H. Behle
California Cuckoo in Southeastern Nevada
Clarence Cottam