THE CONDOR
Vol. 103, Number 2
May 2001
TABLE OF CONTENTS

FEATURE ARTICLES

Pathogenicity, Serological Responses, and Diagnosis of Experimental and Natural Malarial Infections in Native Hawaiian Thrushes		209
	CARTER T. ATKINSON, JULIE K. LEASE, BETH M. DRAKE AND NICHOLAS P. SHEMA
Radar-Based Monitoring of Marbled Murrelets		219
	BRIAN A. COOPER, MARTIN G. RAPHAEL AND DIANE EVANS MACK
Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia		230
	SIMON D. BERROW AND JOHN P. CROXALL
Food Supply and the Consequences of Egg Size in the Thick-billed Murre		240
	J. MARK HIPFNER, ANTHONY J. GASTON AND ANNE E. STOREY
Phylogenetic Relationships in Bearded Manakins (Pipridae: Manacus) Indicate that Male Plumage Color is a Misleading Taxonomic Marker		248
	ROBB T. BRUMFIELD AND MICHAEL J. BRAUN
Movements, Habitat Use, and Survival of Nonbreeding Piping Plovers		259
	KATHERINE R. DRAKE, JONATHAN E. THOMPSON, KIEL L. DRAKE AND CURT ZONICK
A Half-Century Comparison of Breeding Birds in the Southern Appalachians		268
	J. CHRISTOPHER HANEY, DAVID S. LEE AND MARK WILBERT
Species Limits in Antbirds: The Thamnophilus punctatus Complex Continued		278
	MORTON L. ISLER, PHYLLIS R. ISLER, BRET M. WHITNEY AND BARRY WALKER
Geographical Variation in the Calls of the Choughs		287
	PAOLA LAIOLO, ANTONIO ROLANDO, ANNE DELESTRADE AND AUGUSTO DE SANCTIS
Lekking Behavior of the Round-tailed Manakin		298
	JOSE G. TELLO
Habitat Preferences of Pinyon-Juniper Specialists near the Limit of their Geographic Range		322
	DAVID C. PAVLACKY JR. AND STANLEY H. ANDERSON
Transect Surveys of Columbid Nests on Puerto Rico, Vieques, and Culebra Islands		332
	FRANK F. RIVERA-MILAN
Movement Patterns of Adult Male Ovenbirds during the Post-Fledging Period in Fragmented and Forested Boreal Landscapes		343
	ERIN M. BAYNE AND KEITH A. HOBSON
Sex Ratios of Dunlin Wintering at Two Latitudes on the Pacific Coast		352
	PHILIPPA C. F. SHEPHERD, DAVID B. LANK, BARRY D. SMITH, NILS WARNOCK, GARY W. KAISER AND TONY D. WILLIAMS
Factors Influencing Pair Territoriality in the Juniper Titmouse		361
	BETH J. CHRISTMAN
SHORT COMMUNICATIONS
Field Metabolism and Water Flux of Carolina Chickadees during Breeding and Nonbreeding Seasons: A Test of the "Peak-Demand" and "Reallocation" Hypotheses		370
	PAUL F. DOHERTY JR., JOSEPH B. WILLIAMS AND THOMAS C. GRUBB JR.
Effect of Group Size on Field Metabolic Rate of Arabian Babblers Provisioning Nestlings		376
	AVNER ANAVA, MICHAEL KAM, AMIRAM SHKOLNIK AND A. ALLAN DEGEN
Nonrandom Mating and Productivity of Adult and Subadult Cooper's Hawks		381
	CLINT W. BOAL
Sex Ratio Bias at Hatching and Fledging in the Roseate Tern		385
	PATRICIA SZCZYS, IAN C. T. NISBET, JEREMY J. HATCH AND RICHARD V. KESSELI
Vocal Mimicry in Distress Calls of Phainopeplas		389
	MIYOKO CHU
Digestive Constraints and Nutrient Hydrolysis in Nestlings of Two Flamingo Species		396
	PABLO SABAT, F. FERNANDO NOVOA AND MARIO PARADA
Effects of Anthropogenic Food Sources on Movements, Survivorship, and Sociality of Common Ravens in the Arctic		399
	MARCO RESTANI, JOHN M. MARZLUFF AND RICHARD E. YATES
Species and Sex-Biased Predation on Hatchling Green Turtles by Frigatebirds on Europa Island, Western Indian Ocean		405
	FRÉDÉRIC LAGARDE, MATTHIEU LE CORRE AND HERVÉ LORMEÉ
Post-Fledging Broods of Migratory Harlequin Ducks Accompany Females to Wintering Areas		408
	HEIDI M. REGEHR, CYNDI M. SMITH, BRIAN ARQUILLA AND FRED COOKE
The Social Organization and Mating System of the Striated Grasswren		412
	JORDAN KARUBIAN
COMMENTARY
Is Spizella taverneri a Species or a Subspecies?		418
	ERNST MAYR AND NED K. JOHNSON
The Taxonomic Rank of Spizella taverneri: A Response to Mayr and Johnson		420
	JOHN KLICKA, ROBERT M. ZINK, JON C. BARLOW, W. BRUCE MCGILLIVRAY AND TERRY DOYLE
BOOK REVIEWS
Important Bird Areas in Kenya, by L. Bennun and P. Njoroge		423
	THOMAS BROOKS
Important Bird Areas in Europe. Priority Sites for Conservation, edited by Melanie F. Heath and Michael J. Evans		424
	HECTOR GALBRAITH
Birding in the American West, by Kevin J. Zimmer		425
	GUY MCCASKIE
Birds of Delaware, by Gene K. Hess, Richard L. West, Maurice V. Barnhill III, and Lorraine M. Fleming		426
	BRUCE PETERJOHN