Contents
Recent History and Ecology of the Laysan Duck
Richard E. Warner
Interbreeding of Glaucous-winged and Herring Gulls in the Cook Inlet Region, Alaska
Francis S. Williamson and Leonard J. Peyton
Life History of the Cactus Wren. Part Vi: Competition and Survival
Anders H. Anderson and Anne Anderson
The Display of the Orange-headed Manakin
David W. Snow
Notes and News
The Condor
Covers
Front Matter (PDF)
The Condor
Back Matter (PDF)
The Condor
From Field and Study
The Grebe Aechmophorus Occidentalis Clarkii as a Nesting Bird of the Mexico Plateau
Robter W. Dickerman
Sand Grouse Released in Nevada Found in Mexico
Glen C. Christensen
Stimuli for Ovulation in the Rock Dove
Richard F. Johnston
The Trumpeter Swan in Marin County, California
Alice Williams and Grace M. Miller
An Albinistic Anna Hummingbird
Richard C. Banks and Don R. Medina