Contents
Evolution in the House Sparrow. I. Intrapopulation Variation in North America
Robert K. Selander and Richard F. Johnston
Utilization of the Breeding Territory in the Black-capped Chickadee
Raymond A. Stefanski
The Responses of Incubating Ringed Turtle Doves (streptopelia Risoria) to Manipulated Egg Temperatures
Edwin C. Franks
Grebes from the Late Pliocene of North America
Bertram G. Murray Jr.
Gonadal Responses of Brown-headed Cowbirds to Long Daylength
Robert B. Payne
Feeding Behavior and Food-consumption Rates of a Captive California Murre
Richard C. Sanford and Stanley W. Harris
News and Notes
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Communications
The Distribution of Certain Mimidae in California
Guy Mccaskie, Richard Stallcup, and Paul Debenedictis
Galapagos Finches Grooming Marine Iguanas
Dean Amadon
Additional Observations on the Status of North American White Pelicans
Daniel W. Anderson and James C. Bartonek
Bald Eagle Swimming in the Ocean with Prey
Thomas L. Danielsen
Some Bird Records from San Diego County, California
Amadeo M. Rea
Black-billed Cuckoo Records in California
Willet T. Velzen
Some Supplementary Records of Birds in Baja California, Mexico
Richard C. Banks
Two June Records of the Canada Goose in Grand Canyon, Arizona
Norman G. Messinger
Common Gallinule in Humboldt County, California
Richard J. Wheeler
Additions to the Avifauna of Panama: the Palm Warbler and the Connecticut Warbler
David L. Hicks, Eustorgio Mendez, and Horace Loftin
Golden Plovers in the Galapagos
Jeremy J. Hatch and Jack P. Hailman