Contents
Evolution of Polygyny in the Ancestors of Red-winged Blackbirds
William A. Searcy, Ken Yasukawa, and Scott Lanyon
Winter Philopatry in Migratory Waterfowl
Gregory J. Robertson and Fred Cooke
Recent Increase in Male House Finch Plumage Variation and Its Possible Relationship to Avian Pox Disease
Sherie N. Zahn and Stephen I. Rothstein
Nest-site Selection in the Acorn Woodpecker
Philip N. Hooge, Mark T. Stanback, and Walter D. Koenig
Nest-building Behavior in Pcb-contaminated Tree Swallows
John P. Mccarty and Anne L. Secord
Exogenous Testosterone and the Adrenocortical Response in Dark-eyed Juncos
Stephan J. Schoech, Ellen D. Ketterson, and Val Nolan Jr.
Effects of Plot Size and Habitat Characteristics on Breeding Success of Scarlet Tanagers
Christopher Roberts and Christopher J. Norment
Species Limits in Antbirds (passeriformes: Thamnophilidae): the Myrmotherula Surinamensis Complex
Morton L. Isler, Phyllis R. Isler, and Bret M. Whitney
Use of Supplemental Food by Breeding Ross's Geese and Lesser Snow Geese: Evidence for Variable Anorexia
Mark L. Gloutney, Ray T. Alisauskas, Keith A. Hobson, and Alan D. Afton
Habitat Requirements of Henslow's Sparrows Wintering in Silvicultural Lands of the Gulf Coastal Plain
Sheldon Plentovich, Nicholas R. Holler, and Geoffrey E. Hill
Phylogeny of the Falconidae Inferred from Molecular and Morphological Data
Carole S. Griffiths
How White-throated Magpie-jay Helpers Contribute during Breeding
Tom A. Langen and Sandra L. Vehrencamp
Molecular Systematics and Biogeography of the Cockatoos (psittaciformes: Cacatuidae)
David M. Brown and Catherine A. Toft
Evolution of Reversed Sexual Size Dimorphism in Skuas and Jaegers
Paulo Catry, Richard A. Phillips, and Robert W. Furness
Unusual Timing of Copulations in the Australian Brush-turkey
Sharon M. Birks
Flying the Gantlet: Population Characteristics, Sampling Bias, and Migration Routes of Eared Grebes Downed in the Utah Desert
Joseph R. Jehl Jr., Annette E. Henry, and Suzanne I. Bond
Foam Produced by Male Coturnix Quail: what is Its Function?
Elizabeth Adkins-Regan
The Long-billed Lark Complex: a Species Mosaic in Southwestern Africa
Peter G. Ryan and Paulette Bloomer
A Model of the Dynamics of Cowbirds and Their Host Communities
Joseph A. Grzybowski and Craig M. Pease
In Memoriam: Mikl
Blair Csuti and Martin R. Brittan
In Memoriam: Miguel
Adolfo G. Navarro S. and Jose Eduardo Morales-Perez
William Brewster Memorial Award, 1998:
Frank B. Gill
Elliott Coues Award, 1998:
Jared M. Diamond
100 Years Ago in the Auk
The Auk
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
Body Size, Nest Initiation Date, and Egg Production in Ruddy Ducks
Lori A. Boon and C. Davison Ankney
Intraclutch Variation in Testosterone Content of Red-winged Blackbird Eggs
Joseph L. Lipar, Ellen D. Ketterson, and Val Nolan Jr.
Timing of Egg Laying in Yellow Warblers
D. Glen Mcmaster, Spencer G. Sealy, Sharon A. Gill, and Diane L. Neudorf
Effects of Dominance on Vigilance in Avian Social Groups
Vladimir V. Pravosudov and Thomas C. Grubb Jr.
Maintenance Energy Costs of Two Partially Folivorous Tropical Passerines
Carlos Bosque, M. Andreina Pacheco, and Rodney B. Siegel
Low Extrapair Paternity in the Cactus Finch (geospiza Scandens)
Kenneth Petren, B. Rosemary Grant, and Peter R. Grant
Orange-tufted Sunbirds Do Not Feed Nectar to Their Chicks
Shai Markman, Berry Pinshow, and Jonathan Wright
Video Identification of Predators at Songbird Nests in Old Fields
Frank R. Thompson III, William Dijak, and Dirk E. Burhans
Floater Males Engage in Extrapair Copulations with Resident Female Tree Swallows
Colleen A. Barber and Raleigh J. Robertson
Response of Female Hooded Mergansers to Eggs of an Interspecific Brood Parasite
Bruce D. Dugger, Lia C. Bollmann, and Leigh H. Fredrickson
Speciation in North American Chickadees: Ii Geography of Mtdna Haplotypes in Poecile Carolinensis
Frank B. Gill, Beth Slikas, and David Agro