THE CONDOR
Vol. 103, Number 4
November 2001
TABLE OF CONTENTS

FEATURE ARTICLES

Demography of the California Spotted Owl in Northeastern California		667
	JENNIFER A. BLAKESLEY, BARRY R. NOON AND DANIEL W. H. SHAW
Thermal Ecology and Ecological Energetics of California Spotted Owls		678
	WESLEY W. WEATHERS, PETER J. HODUM AND JENNIFER A. BLAKESLEY
Natal Dispersal of the Spotted Owl in Southern California: Dispersal Profile of an Insular Population		691
	WILLIAM S. LAHAYE, R. J. GUTIÉRREZ AND JEFFREY R. DUNK
Landscape Context and Fragmentation Effects on Forest Birds in Southern Ontario		701
	MADELINE J. W. AUSTEN, CHARLES M. FRANCIS, DAWN M. BURKE AND MICHAEL S. W. BRADSTREET
Fall Migration Routes, Timing, and Wintering Sites of North American Ospreys as Determined by Satellite Telemetry		715
	MARK S. MARTELL, CHARLES L. HENNY, PETER E. NYE AND MATTHEW J. SOLENSKY
Synchrony and Periodicity of Eruptions by Boreal Birds		725
	WALTER D. KOENIG
Reproductive Ecology and Demography of the `Äkohekohe		736
	JOHN C. SIMON, THANE K. PRATT, KIM E. BERLIN AND JAMES R. KOWALSKY
Home Range and Territoriality of Two Hawaiian Honeycreepers, the `Äkohekohe and Maui Parrotbill		746
	THANE K. PRATT, JOHN C. SIMON, BRIAN P. FARM, KIM E. BERLIN AND JAMES R. KOWALSKY
Two-Year Delay in Plumage Maturation of Male and Female `Elepaio		756
	ERIC A. VANDERWERF
Annual Patterns of Molt and Reproductive Activity of Passerines in South-Central Brazil		767
	MIGUEL Â. MARINI AND RENATA DURÃES
Habitat Selection and Activity Budgets of Keel-billed Toucans at the Landscape Level		776
	CATHERINE GRAHAM
Habitat Characteristics and Nest Success of Snowy Plovers Associated with California Least Tern Colonies		785
	ABBY N. POWELL
Relationships between Black-legged Kittiwake Nest-Site Characteristics and Susceptibility to Predation by Large Gulls		793
	MELANIE MASSARO, JOHN W. CHARDINE AND IAN L. JONES
Annual Variation in Great Skua Diets: The Importance of Commercial Fisheries and Predation on Seabirds Revealed by Combining Dietary Analyses		802
	STUART BEARHOP, DAVID R. THOMPSON, RICHARD A. PHILLIPS, SUSAN WALDRON, KEITH C. HAMER, CATHERINE M. GRAY, STEPHEN C. VOTIER, BEN P. ROSS AND ROBERT W. FURNESS
Intraspecific Variation in Nutrient Reserve Use during Clutch Formation by Lesser Scaup		810
	DANIEL ESLER, JAMES B. GRAND AND ALAN D. AFTON
The Influence of Kinship on Nutritional Condition and Aggression Levels in Winter Social Groups of Tufted Titmice		821
	ELENA V. PRAVOSUDOVA, THOMAS C. GRUBB JR. AND PATRICIA G. PARKER
Egg Mimicry in Cuckoos Parasitizing Four Sympatric Species of Acrocephalus Warblers		829
	ERIK EDVARDSEN, ARNE MOKSNES, EIVIN RØSKAFT, INGAR J. ØIEN AND MARCEL HONZA
SHORT COMMUNICATIONS
Basal Metabolic Rate Declines during Long-Distance Migratory Flight in Great Knots		838
	PHIL F. BATTLEY, ANNE DEKINGA, MAURINE W. DIETZ, THEUNIS PIERSMA, SIXIAN TANG AND KEES HULSMAN
High Frequency of Extra-Pair Paternity in Eastern Kingbirds		845
	DIANE L. ROWE, MICHAEL T. MURPHY, ROBERT C. FLEISCHER AND PAUL G. WOLF
The Number of Provisioning Visits by House Finches Predicts the Mass of Food Delivered		851
	PAUL M. NOLAN, ANDREW M. STOEHR, GEOFFREY E. HILL AND KEVIN J. MCGRAW
Song Variation among Cistothorus Wrens, with a Focus on the Mérida Wren		855
	DONALD E. KROODSMA, KRISTA WILDA, VIVIANA SALAS AND ROLDAN MURADIAN
Mechanical Sounds and Sexual Dimorphism in the Crested Doradito		861
	KIMBERLY S. BOSTWICK AND KRISTOF ZYSKOWSKI
Male Incubation and Biparental Care in Mountain Quail		865
	MICHAEL D. POPE AND JOHN A. CRAWFORD
Effect of Food Availability on Arrival and Departure Decisions of Harlequin Ducks at Diurnal Feeding Grounds		870
	MICHAEL S. RODWAY AND FRED COOKE
Nutritional Condition and Muscular Features of Wintering Long-billed Murrelets in Japan		874
	NARIKO OKA AND HARUMI HAMASOTO
Annual Reproductive Success of Culvert-Dwelling Cliff Swallows in East-Central Texas		879
	KARL L. KOSCIUCH, ANDREW C. KASNER AND KEITH A. ARNOLD
COMMENTARY
On Drawing Conclusions Nine Years after the Exxon Valdez Oil Spill		886
	JOHN A. WIENS, ROBERT H. DAY, STEPHEN M. MURPHY AND KEITH R. PARKER
A Brief Response to Wiens et al., Twelve Years after the Exxon Valdez Oil Spill		892
	DAVID B. IRONS, STEVEN J. KENDALL, WALLACE P. ERICKSON, LYMAN L. MCDONALD AND BRIAN K. LANCE
BOOK REVIEW
Narrative of a Journey across the Rocky Mountains to the Columbia River, and a Visit to the Sandwich Islands, Chili, &c., with a Scientific Appendix, by John Kirk Townsend		895
	LLOYD F. KIFF
NEWS AND NOTES		897
AWARD ANNOUNCEMENTS		901
REVIEWERS FOR VOLUME 103		905
INDEX TO VOLUME 103		907