Contents
A Study of Nesting Wood Ducks in Iowa
Frederic Leopold
Persistence of a Rare Color Aberration in the Heermann Gull
Carl L. Hubbs and George A. Bartholomew
A List of the Birds of Nevada
Jean M. Linsdale
The Races of Song Sparrows in Alaska
Ira N. Gabrielson and Frederick C. Lincoln
Notes and News
The Condor
Cooper Club Meetings
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
American Avocet on Nest, a Photograph
Ed Harrison and Frances Roberts
Pigeon Hawk Catching Dragonflies
R. M. Bond
Frigate Bird Crossing Isthmus of Tehuantepec
Walter W. Dalquest
Blue Grosbeak in the Badlands of South Dakota
Harvey B. Lovell
The Status of Rough-legged Hawks in Idaho
Richard D. Porter
Mourning Doves Raise Triplets
C. V. Duff
Fishing Efficiency of the Black Skimmer
L. Irby Davis
Recent Bird Records from Northeastern Colorado
Richard G. Beidleman
Sitka Crossbill in Kansas
Harrison B. Tordoff
Caprimulgus Ridgwayi in Michoacan, Mexico
George Miksch Sutton
Lapland Longspur in Arizona
Thomas R. Howell
Short-eared Owl Eaten by Horned Owl
Merlin L. Killpack