Contents
Speciation in the Carbonated Flower-piercer (diglossa Carbonaria) Complex of the Andes
Gary R. Graves
Recent Publications
The Condor
Factors Affecting How Male and Female Bobolinks Apportion Parental Investments
James F. Wittenberger
The Relationships of the Wrentit as Indicated by Dna-dna Hybridization
Charles G. Sibley and Jon E. Ahlquist
Comparative Avian Cytogenetics: a Review
Gerald F. Shields
Reproduction and Nest Site Characteristics of American Coots at Different Altitudes in Colorado
Warner P. Gorenzel, Ronald A. Ryder, and Clait E. Braun
Nesting Ecology and Production of Western Grebes at Bear River Migratory Bird Refuge, Utah
Mark L. Lindvall and Jessop B. Low
Selective Use of Black-tailed Prairie Dog Towns by Mountain Plovers
Craig J. Knowles, Charles J. Stoner, and Steven P. Gieb
Effects of Urbanization on Avian Community Organization
Steven R. Beissinger and David R. Osborne
A Comparison of Foraging Behavior among Permanent, Summer, and Winter Resident Bird Groups
Robert E. Lewke
Energetics and Spread-winged Behavior of Anhingas in Florida
Willard W. Hennemann III
The Migration of Common Loons through Eastern New York
Paul Kerlinger
Nest and Brood Attentiveness in Female Black Ducks
James K. Ringelman, Jerry R. Longcore, and Ray B. Owen Jr.
Information for Contributors
The Condor
News and Notes
The Condor
The Bulletin Board
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Within-territory Division of Foraging Space by Male and Female Amakihi (loxops Virens)
Alan C. Kamil and Charles Van Riper III
Territorial Behavior of the Blue-black Grassquit
Bertram G. Murray Jr.
Site-specific Nest Defense Behavior of Black Skimmers and Least Terns
Jerome A. Jackson, Bernard E. Rowe, Melinda S. Hetrick, and Bette J. Schardien
Determination of Fresh Egg Mass during Natural Incubation
Gilbert S. Grant, Charles V. Paganelli, Ted N. Pettit, G. Causey Whittow, and Hermann Rahn
Hummingbirds Feeding on an Excretion Produced by Scale Insects
Ernest P. Edwards
Diurnal Rhythms in the Vocalizations of Budgerigars
Robert Ferrell and Luis F. Baptista
Bald Eagle Nesting Studies in Seymour Canal, Southeast Alaska
John I. Hodges Jr.
Broad-billed Prion at Mollendo, Peru; First Record for the Pacific Coast of South America
R. A. Hughes
Grenada Hook-billed Kites: Recent Status and Life History Notes
Thomas Bates Smith and Stanley A. Temple