Contents
Photoperiodic Responses of a Subtropical Population of the Finch (zonotrichia Capensis Hypoleuca)
Robert Alan Lewis, James R. King, and Donald S. Farner
Ecological and Social Implications of Sexual Dimorphism in Five Melanerpine Woodpeckers
Robert A. Wallace
Longevity Records for Some Neotropical Land Birds
D. W. Snow and Alan Lill
The Thermal and Radiant Environment of a Winter Hummingbird Nest
William A. Calder Jr.
Molt and Its Timing in the Pinon Jay, Gymnorhinus Cyanocephalus
J. David Ligon and James L. White
The Birds of Adak Island, Alaska
G. Vernon Byrd, Daniel D. Gibson, and David L. Johnson
Genetic Polymorphism in New Guinea Starlings of the Genus Aplonis
Kendall W. Corbin, Charles G. Sibley, Andrew Ferguson, Allan C. Wilson, Alan H. Brush, and Jon E. Ahlquist
The Avian Egg: Surface Area, Volume, and Density
C. V. Paganelli, A. Olszowka, and A. Ali
Notes on Some Birds in West-central Peru
Manuel A. Plenge
News and Notes
The Condor
The Bulletin Board
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Observations on the Food and Nesting of the Broad-winged Hawk (buteo Platypterus) in Northeastern Kansas
Henry S. Fitch
First Nesting of Black Skimmer in California
Guy Mccaskie, Steve Liston, and William A. Rapley
Breeding of the Black Guillemot in Northern Alaska
George J. Divoky, James C. Bartonek, and William A. Rapley
Sympatry and Interbreeding of Herring and Glaucous-winged Gulls in Southeastern Alaska
Sam Patten and A. R. Weisbrod
Ecological Studies of the Plumes of the Peacock (pavo Cristatus)
Indra Kumar Sharma
Bird Records from Honduras
Hugh C. Brown and Burt L. Monroe Jr.
Salmonella Typhimurium from a Maryland Mourning Dove
R. M. Kocan and L. N. Locke
Black-headed Grosbeak at Atlanta, Georgia
Anita L. Parker
Second Nesting of Broad-tailed Hummingbirds
Alfred M. Bailey
Ecological Segregation of Swainson's and Hermit Thrushes on Langara Island, British Columbia
Spencer G. Sealy
Genetic Structure of Two Populations of White-crowned Sparrows with Different Song Dialects
Myron Charles Baker
Foods at a Golden Eagle Nest in Central Alaska
David F. Hatler
Confirmation of the Nesting of the Gray Jay in New Mexico
Stuart R. Bryan Jr.
The Bioenergetics of the Blue Jay in Central Illinois
Robert J. Clemans