Contents
Thermal Consequences of Roost-site Selection: the Relative Importance of Three Modes of Heat Conservation
Glenn E. Walsberg
Clutch Size and Fledging Success in the Turquoise-browed Motmot
Peter E. Scott and Robert F. Martin
Notes and News
The Auk
Moonlight Avoidance Behavior in Leach's Storm-petrels as a Defense against Slaty-backed Gulls
Yutaka Watanuki
Relationships among Territory Size, Habitat, Song, and Nesting Success of Northern Cardinals
Richard N. Conner, Mary E. Anderson, and James G. Dickson
Family Associations in Communally Roosting Black Vultures
Patricia Parker Rabenold
Comparative Reproductive Success of Yellow-shafted, Red-shafted, and Hybrid Flickers across a Hybrid Zone
William S. Moore and Walter D. Koenig
Reversed Sexual Size Dimorphism: Effect on Resource Defense and Foraging Behaviors of Nonbreeding Northern Harriers
Ethan J. Temeles
Dispersal in White-crowned Sparrows: a Computer Simulation of the Effect of Study-area Size on Estimates of Local Recruitment
Michael A. Cunningham
Nesting Success and Mortality of the Boat-tailed Grackle
G. Thomas Bancroft
Hourly Variation in Morning Point Counts of Birds
Jared Verner and Lyman V. Ritter
Growth Rates of Cranes Reared in Captivity
Robert E. Ricklefs, Donald F. Bruning, and George W. Archibald
Why Are Nesting Marsh Wrens and Yellow-headed Blackbirds Spatially Segregated?
Marty L. Leonard and Jaroslav Picman
Seabird Patchiness in Tropical Oceanic Waters: the Influence of Sargassum Reefs""
J. Christopher Haney
Parental Investment by the Northern Mockingbird: Male and Female Roles in Feeding Nestlings
Randall Breitwisch, Peter G. Merritt, and George H. Whitesides
100 Years Ago in the Auk
The Auk
Thermal Insulation of the Down and Feathers of Pygoscelid Penguin Chicks and the Unique Properties of Penguin Feathers
Jan R. E. Taylor
Flight Cost of a Small Passerine Measured Using Doubly Labeled Water: Implications for Energetics Studies
Paul Tatner and David M. Bryant
Changes in Body Weight and Body Composition of Breeding Ring-necked Ducks (aythya Collaris)
William L. Hohman
Male Courtship Vocalizations as Cues for Mate Choice in the Satin Bowerbird (ptilonorhynchus Violaceus)
Christopher A. Loffredo and Gerald Borgia
Multiple Brooding as a Reproductive Strategy: Time-conserving Adaptations in Mourning Doves
David Westmoreland, Louis B. Best, and David E. Blockstein
In Memoriam: Rodolphe Meyer De Schauensee
S. Dillon Ripley
In Memoriam: Andrew Keve, 1909-1984
Miklos D. Udvardy
In Memoriam: Edgar Bryan Kincaid, Jr, 1921-1985
Charles Hartshorne
In Memoriam: Charles Russell Mason, 1895-1983
Herbert W. Kale II
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
Song Sparrows Grow and Shrink with Age
James N. Smith, Peter Arcese, and Dolph Schluter
Feeding of Brown-headed Cowbird (molothrus Ater) Fledglings by More Than One Host" Species"
Nedra K. Klein and Kenneth V. Rosenberg
The Influence of Human Disturbance on Tufted Puffin Breeding Success
D. J. Pierce and T. R. Simons
Was Bachman's Warbler a Bamboo Specialist?
J. V. Remsen Jr.
Relationships of Pelagic Seabirds with the Southern Ocean Environment Assessed by Correspondence Analysis
R. W. Abrams and L. G. Underhill
An Alternative Method for the Analysis of Emlen Funnel Data
Jeffrey D. Cherry and Kenneth P. Able
Notes on the Plumages of the Paramo Seedeater (catamenia Homochroa)
Robert W. Dickerman
Breeding-site Selection and Colony Formation in Double-crested and Pelagic Cormorants
Douglas Siegel-Causey and George L. Hunt Jr.
Nutrient Reserves of Premigratory Brant during Spring
Larry D. Vangilder, Loren M. Smith, and Richard K. Lawrence
Delayed Nocturnal Occupation of Breeding Colonies by Least Terns (sterna Antillarum)
Jonathan L. Atwood
Development of Formation Flying in Juvenile White Ibises (eudocimus Albus)
Daniel R. Petit and Keith L. Bildstein
Commentary
Long Laying Intervals
S. Marchant
Editorial
Peer Review
Alan H. Brush