Contents
Seasonal Aspects of the Diet of Bonaparte's Gulls (larus Philadelphia) in the Quoddy Region, New Brunswick, Canada
Birgit M. Braune
100 Years Ago in the Auk
The Auk
Experiments on the Control of Deceptive Signals of Status in White-crowned Sparrows
Gary N. Fugle and Stephen I. Rothstein
Yearly and Situational Changes in the Estimate of Repertoire Size in Northern Mockingbirds (mimus Polyglottos)
Kim C. Derrickson
Plasma Levels of Prolactin and Gonadotropins during the Reproductive Cycle of White-crowned Sparrows (zonotrichia Leucophrys)
Eve S. Hiatt, Arthur R. Goldsmith, and Donald S. Farner
Activity Budgets and Foraging Ranges of Breeding Common Murres
D. K. Cairns, K. A. Bredin, and W. A. Montevecchi
Interseasonal and Intersexual Resource Partitioning in Hairy and White-headed Woodpeckers
Michael L. Morrison and Kimberly A. With
Pairing Success of Kirtland's Warblers in Marginal Vs Suitable Habitat
John R. Probst and Jack P. Hayes
Economics of Breeding Territoriality in Male Calliope Hummingbirds
Doug P. Armstrong
Ecology and Physiology of Fasting in King Penguin Chicks
Yves Cherel, Jean-Claude Stahl, and Yvon Le Maho
Diet Selection by Yearling Northwestern Crows (corvus Caurinus) Feeding on Littleneck Clams (venerupis Japonica)
Howard Richardson and Nicolaas A. Verbeek
Field Metabolism and Food Consumption of Savannah Sparrows during the Breeding Season
Joseph B. Williams
Competitive Interactions Within and Between Species in a Guild of Avian Scavengers
Michael P. Wallace and Stanley A. Temple
Chlorostilbon Bracei Lawrence, an Extinct Species of Hummingbird from New Providence Island, Bahamas
Gary R. Graves and Storrs L. Olson
Notes and News
The Auk
Suppression of Autumnal Migratory Unrest in Dark-eyed Juncos Held during Summer On, Near, or Far from Their Previous Wintering Sites
Ellen D. Ketterson and Val Nolan Jr.
Influence of Population Size on Habitat Use by Territorial Male Red-winged Blackbirds in Agricultural Landscapes
Robert G. Clark and Patrick J. Weatherhead
In Memoriam: George J Wallace
John William Hardy
In Memoriam: Cyrus Mark, 1900-1983
Melvin A. Traylor Jr.
In Memoriam: William Walker Hamilton Gunn, 1913-1984
W. John Richardson
In Memoriam: Claes Christian Olrog, 1912-1985
Paul Handford
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
Localization of Oviductal Sperm-storage Tubules in the American Kestrel (falco Sparverius)
Murray R. Bakst and David M. Bird
Malate Dehydrogenase Isozymes Provide a Phylogenetic Marker for the Piciformes (woodpeckers and Allies)
John C. Avise and Charles F. Aquadro
Limitations of Tetracycline in Tracing Multiple Maternity
John Mca. Eadie, Kimberly M. Cheng, and Cathleen R. Nichols
It is Expensive to Be Dominant
Olav Hogstad
The Snapshot" Count for Estimating Densities of Flying Seabirds during Boat Transects: a Cautionary Comment"
A. J. Gaston, B. L. Collins, and A. W. Diamond
Avian Play: Comparative Evolutionary and Developmental Trends
Joseph C. Ortega and Marc Bekoff
A Selfish Herd of Martins
Doris J. Watt and Douglas W. Mock
Commentaries
Spacing Behavior and Population Regulation in Female Blue Grouse
Susan J. Hannon and Fred C. Zwickel
Response to S J Hannon and F C Zwickel
A. T. Bergerud and H. E. Butler
Ornithology in Central and South America
Paul C. James
Proceedings Of The One Hundred And Fourth Stated Meeting Of The American Ornithologists' Union
Introduction
The Auk
Iib Foraging & Spacing
The Auk
Iic Community Ecology
The Auk
Iiib Breeding Biology
The Auk
Iva Behavioral Ecology
The Auk
Ivb Physiology/migration
The Auk
Vb Population Ecology
The Auk
Via Behavior
The Auk
Vib Vocalizations
The Auk
Resolutions
The Auk