Contents
Species Concepts in Ornithology
Mary C. Mckitrick and Robert M. Zink
Carcass Composition and Energy Reserves of Sage Grouse during Winter
T. E. Remington and C. E. Braun
Diets of the White-chinned Petrel and Sooty Shearwater in the Southern Benguela Region, South Africa
S. Jackson
Female and Male Specialization in Parental Care and Its Consequences in Black-billed Magpies
Deborah Buitron
Shiny Cowbird Parasitism in Central Brazil
Robero B. Cavalcanti and Thais Martins Pimentel
The Form and Function of Song in Female Song Sparrows
Peter Arcese, Philip Kraft Stoddard, and Sara M. Hiebert
Nest Predation and Nest-site Selection of a Western Population of the Hermit Thrush
Thomas E. Martin and James J. Roper
House Finch Nest-site Selection at Guelph, Ontario
Donald S. Graham
Population Biology of Cavity Nesters in Northern Arizona; Do Nest Sites Limit Breeding Densities
Jeffrey D. Brawn and Russell P. Balda
Components of Clutch Size Variation in Arctic-nesting Canada Geese
Charles D. Macinnes and Erica H. Dunn
Great Frigatebird Size Dimorphism on Two Central Pacific Atolls
Elizabeth Anne Schreiber and Ralph W. Schreiber
Nocturnal Energy Expenditure of Dark-eyed Juncos Roosting in Indiana during Winter
D. R. Webb and Christopher M. Rogers
Use of Exotic Saltcedar (tamarix Chinensis) by Birds in Arid Riparian Systems
William C. Hunter, Robert D. Ohmart, and Bertin W. Anderson
Experimental Study of Predation on Eggs of Ground-nesting Birds; Effects of Habitat and Nest Distribution
Jaroslav Picman
Copying of Foraging Locations in Mixed-species Flocks of Temperate-deciduous Woodland Birds: an Experimental Study
Thomas A. Waite and Thomas C. Grubb Jr.
Timing of the Definitive Prebasic Molt in Yellow Warblers at James Bay, Ontario
Christopher C. Rimmer
Diving Patterns in Relation to Diet of Gentoo and Macaroni Penguins at South Georgia
J. P. Croxall, R. W. Davis, and M. J. O'Connell
Underwater Foraging Behavior of Canvasbacks, Lesser Scaups, and Ruddy Ducks
Michael W. Tome and Dale A. Wrubleski
Foraging Ecology of Avian Frugivores and Some Consequences for Seed Dispersal in an Illinois Woodlot
Patti Katusic Malmborg and Mary F. Willson
Oxygen Consumption and Growth of Northern Bobwhite Embryos under Normoxic and Hyperoxic Conditions
Joseph B. Williams and Kendra Swift
Nest-defense Behavior in the Red-winged Blackbird
Richard L. Knight and Stanley A. Temple
Pairing Patterns and Fitness in a Free-ranging Population of Pinyon Jays: what Do They Reveal about Mate Choice?
John M. Marzluff and Russell P. Balda
Foraging Ranges and Partitioning of Feeding Zones in Three Species of Southern Albatrosses
Henri Weimerskirch, John Alexander Bartle, Pierre Jouventin, and Jean Claude Stahl
Stepwise Molt of Remiges in Blue-eyed and King Shags
Pamela C. Rasmussen
Controlled Pool Elevation and Its Effects on Canada Goose Productivity and Nest Location
Thomas A. O'Neil
News and Notes
The Condor
Book Reviews
Marcy F. Lawton
Books Received
The Condor
Information for Contributors
The Condor
On Sample Sizes and Reliable Information
Michael L. Morrison
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Nesting of the Wing-banded Antbird and the Thrush-like Antpitta in French Quiana
Oliver Tostain and Jean-Luc Dujardin
The Nesting and Feeding Behavior of the Ornate Hawk-eagle near Manaus, Brazil
Bert C. Klein, Lee H. Harper, Richard O. Bierregaard, and George V. Powell
A Case of Communal Nesting in the European Starling
Philip C. Stouffer, Linda C. Romagnano, Michael P. Lombardo, Ann S. Hoffenberg, and Harry W. Power
Early Pair and Extra-pair Copulations in Willow Ptarmigan
Kathy Martin and Susan J. Hannon
Weddell Seal Preys on Chinstrap Penguin
Frank S. Todd
Nest-site Selection, Nest, and Eggs of the Stout-billed Cinclodes (cinclodes Excelsior), a High Andean Furnariid
Gary R. Graves and Gonzalo Arango
A High Incidence of Brown-headed Cowbird Parasitism of Willow Flycatchers
James A. Sedgwick and Fritz L. Knopf
Changes in Body Mass and Plasma Metabolites during Short-term Fasting in the King Penguin
Yves Cherel and Yvon Le Maho
Notes on the Seabirds of Sala Y Gomez
Peter Harrison and Joseph R. Jehl Jr.
Additional Evidence of Nocturnal Migration by Yellow-rumped Warblers in Winter
Scott B. Terrill and Robert L. Crawford
Protein Costs of the Prebasic Molt of Female Mallards
Mickey E. Keitmeyer
Raven Tool Use
Bernd Heinrich