Contents
Evolution of Brood Parasitism in Altricial Birds
William J. Hamilton III and Gordon H. Orians
Bioenergetics of Lipid Deposition in the Bobolink, a Trans-equatorial Migrant
Cameron E. Gifford and Eugene P. Odum
The Influence of Daylength on Reproductive Timing in the Red Crossbill
Harrison B. Tordoff and William R. Dawson
Additional Hybrids of the Slate-colored Junco and the White-throated Sparrow
Lester L. Short Jr. and Stephen W. Simon
Notes and News
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
From Field and Study
A Western Gull with Symmetrical White Wing Patches
Joseph G. Strauch Jr. and William Thackaberry
The Curve-billed Thrasher in California
Guy Mccaskie and Robert R. Prather
The Pine Warbler in Kansas
David A. Easterla
Bird Records from Southern Nevada
George T. Austin and W. Glen Bradley
An Abundance of White-tailed Kites in Sonoma County, California
Gordon L. Bolander and John R. Arnold
The Starling in Guanajuato, Mexico
Walter R. Donagho
Wintering Rufous-crowned Sparrows Found in Utah
Roland H. Wauer