Contents
Nesting Behavior of the Clark Nutcracker
L. Richard Mewaldt
Population Structure in Salt Marsh Song Sparrows Part I. Environment and Annual Cycle
Richard F. Johnston
Liver and Spleen Weight Cycles in Non-migratory White-crowned Sparrows
Barbara Blanchard Oakeson
A Systematic Review of the Mountain Chickadee
William H. Behle
Cooper Society Meetings
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
Scissor-tailed Flycatcher in Idaho
Florence Thornburg
A Nest of the Striped Horned Owl
Frank A. Hartman
The Western Grebe Taken on Hook and Line
S. Larry Chatwin
Galapagos Penguin in Panama
Eugene Eisenmann
White-throated Sparrow in Humboldt County, California
Charles F. Yocom and Rolf E. Mall
Distributional Data on the Birds of the White Mountain of California and Nevada
Alden H. Miller and Ward C. Russell
Observation on Red Crossbills in Marin County, California
David W. Johnston and Robert A. Norris
Additional Data on the Birds of Guadalupe Island
Thomas R. Howell and Tom J. Cade
Notes and News
The Condor