Contents
The Habits of the Swifts in Yosemite Valley
Enid Michael
Avian Gonads and Migration
W. H. Bergtold
A Report on the Birds of Northwestern Alaska and Regions Adjacent to Bering Strait Part Ix
Alfred M. Bailey
Editorial Notes and News
J. Grinnell
Minutes of Cooper Club Meetings
Hilda W. Grinnell and Alden H. Miller
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
Townsend Solitaire Slaging in the Autumn
Joseph Mailliard
English Aviaries
L. B. Potter
Casualties among Birds
Ernest D. Clabaugh
Ruby-throated Hummingbird near St Michael Alaska
Bradshaw H. Swales
The Present States of the Trumpeter Swan
Allan Brooks
Injured Juncos Quickly Recover
J. Eugene Law
Anna Hummingbird Bathing
James L. Ortega
Contents of Barn Owl Pellets
G. L. Foster
An Additional Subspecies of Spotted Towhee from Lower California
J. Grinnell and H. S. Swarth
Another Struggler Reaches the Pribilofs
Joseph Mailliard
Green-tailed Towhee Qualifies in Intelligence Test
J. Eugene Law