Contents
The Number of Eggs Laid by Cowbirds
David E. Davis
The Fishing Activities of Double-crested Cormorants on San Francisco Bay
George A. Bartholomew
Notes on Some Pelagic Birds of the Coast of British Columbia
Patrick W. Martin
The Pterylosis of the Andean Condor
Harvey I. Fisher
Notes and News
Alden H. Miller
Minutes of Cooper Club Meetings
Irwin D. Nokes and Frances Carter
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
Another Wilson Snipe Perches on a Telephone Pole
E. Lowell Sumner
Spotted Owl Nesting in Colorado
Samuel W. Gadd
Green Heron at Tacoma, Washington
John W. Slipp
Woodpecker Efficiency
P. A. Taverner
Pigmy Nuthatch in Oklahoma
George Miksch Sutton
Some New Bird Records from Oregon
Stanley G. Jewett
The Black Pigeon Hawk in Colorado
Alfred M. Bailey
A Raptor Tally in the Northwest
Aldo Leopold
An Oligocene Hawk from Colorado
Alden H. Miller and Charles G. Sibley
Black Swift in Orange County, California
Wilson C. Hanna
Whooping Cranes in Texas in Summer
James O. Stevenson
Starlings in Southern Utah
Russell K. Grater
Golden Eagles Visit Northern Arizona Desert
Harold C. Bryant