THE CONDOR
Vol. 104, Number 4
November 2002 C.E.
TABLE OF CONTENTS

FEATURE ARTICLES

Avian Facultative Hypothermic Responses: A Review		705
	ANDREW E. MCKECHNIE AND BARRY G. LOVEGROVE
Systematics and Historical Biogeography of Wagtails: Dispersal Versus Vicariance Revisited		725
	GARY VOELKER
Phylogenetic Relationships of the Wrentit Based on Mitochondrial Cytochrome b Sequences		740
	DINO N. BARHOUM AND KEVIN J. BURNS
Geographic Song Variation and its Consequences in the Golden Bowerbird		750
	DAVID A. WESTCOTT AND FREDERIEKE J. KROON
Vocal Development is Correlated with an Indicator of Hatching Date in Brown-headed Cowbirds		761
	ADRIAN L. O'LOGHLEN AND STEPHEN I. ROTHSTEIN
Social Organization on Leks of the Wire-tailed Manakin in Southern Venezuela		772
	MARTIN HEINDL
Population Structure of Pacific Common Eiders Breeding in Alaska		780
	MARGARET R. PETERSEN AND PAUL L. FLINT
Productivity and Nesting Success of Thick-billed Parrots		788
	TIBERIO MONTERRUBIO, ERNESTO ENKERLIN-HOEFLICH AND ROBERT B. HAMILTON
Fitness Consequences of Nest Desertion in an Endangered Host, the Least Bell's Vireo		795
	BARBARA E. KUS
Individual, Temporal, and Seasonal Variation in Sperm Concentration in Tree Swallows		803
	MICHAEL P. LOMBARDO, ARMETRIS N. FORMAN, MATTHEW R. CZARNOWSKI AND PATRICK A. THORPE
Diet of the Endemic Madeira Laurel Pigeon and Fruit Resource Availability: A Study Using Microhistological Analyses		811
	PAULO OLIVEIRA, PATRICIA MARRERO AND MANUEL NOGALES
Parental Provisioning Patterns of Wedge-tailed Shearwaters and their Relation to Chick Body Condition		823
	CHERYL L. BADUINI
SHORT COMMUNICATIONS
Social Structure of Andean Condor Roosts: Influence of Sex, Age, and Season		832
	JOSÉ A. DONÁZAR AND JUAN E. FEIJÓO
Thermal Imaging of House Sparrow Nestlings: The Effect of Begging Behavior and Nestling Rank		837
	ODED OVADIA, BERRY PINSHOW AND ARNON LOTEM
Reduction of Provisioning Effort in Response to Experimental Manipulation of Chick Nutritional Status in the Horned Puffin		842
	ANN M. A. HARDING, THOMAS I. VAN PELT, JOHN F. PIATT AND ALEXANDER S. KITAYSKY
Responses of Adult White-crowned Sparrows to Playback of Song Phrases: Implications for the Ontogeny of Song Recognition		848
	JILL A. SOHA AND CAROL WHALING
Lack of Discrimination of Conspecific Vocalizations by Black-capped Chickadees: Tests on Hand-Raised Juveniles		854
	DAVID E. GAMMON, MYRON C. BAKER AND LISETTE BETANCOURT
Context-Specific Response of Florida Scrub-Jay Pairs to Northern Mockingbird Vocal Mimicry		858
	NOAH T. OWEN-ASHLEY, STEPHAN J. SCHOECH AND RONALD L. MUMME
Brown-headed Cowbirds in Eastern and Western North America Show Similar Use of Courtship Songs in Copulation Contexts		866
	EDNA GORNEY-LABINGER AND STEPHEN I. ROTHSTEIN
Patterns of Prolactin Secretion in Relation to Incubation Failure in a Tropical Seabird, the Red-footed Booby		873
	OLIVIER CHASTEL AND HERVÉ LORMÉE
Nestling Sex Ratio in the Southwestern Willow Flycatcher		877
	EBEN H. PAXTON, MARK K. SOGGE, TRACY D. MCCARTHEY AND PAUL KEIM
Male-Biased Offspring Sex Ratio in the House Wren		881
	SHANNON M. JANOTA, SHERYL SWARTZ SOUKUP AND CHARLES F. THOMPSON
Patterns of Growth in Nestling Indian Barn-Owls		885
	RAJARATHINAVELU NAGARAJAN, KRISHINAMOORTHY THIYAGESAN, RAJAGOPALAN NATARAJAN AND RAMALINAGM KANAKASABAI
Composition of Cavity-Nesting Bird Communities in Montane Aspen Woodland Fragments: The Roles of Landscape Context and Forest Structure		890
	JOSHUA J. LAWLER AND THOMAS C. EDWARDS JR.
A Middle Eocene Shorebird from China		896
	LIANHAI HOU AND PER G. P. ERICSON
Nest Monitoring and Predator Visitation at Nests of Banded Dotterels		899
	RACHEL J. KEEDWELL AND MARK D. SANDERS
BOOK REVIEWS
Birds of Southern South America and Antarctica, by Martin R. de la Peña and Maurice Rumboll		903
	BRYAN L. SHARP
Seabird Bycatch: Trends, Roadblocks, and Solutions, edited by Edward F. Melvin and Julia K. Parrish		903
	ERIC GILMAN
Briefly Noted: Caribbean Triad		905
	WILLIAM I. BOARMAN
FROM THE EDITOR		906
NEWS AND NOTES		907
REVIEWERS FOR VOLUME 104		909
INDEX TO VOLUME 104		911