THE CONDOR
Volume 108, Number 2
May 2006 C.E.
Table of Contents

FEATURE ARTICLES


Juvenile Movement and Natal Dispersal of Northern Goshawks in Arizona 253

J. DAVID WIENS, RICHARD T. REYNOLDS, AND BARRY R. NOON
Influence of Habitat Heterogeneity on Distribution, Occupancy Patterns, and Productivity of Breeding Peregrine Falcons in Central West Greenland
279

CATHERINE S. WIGHTMAN AND MARK R. FULLER
Survival and Movements of Juvenile Burrowing Owls during the Postfledging Period 282

J. MORGAN DAVIES AND MARCO RESTANI
A Productivity Model for Parasitized, Multibrooded Songbirds 292

LARKIN A. POWELL AND MELINDA G. KNUTSON
An Assessment of Bird Habitat Quality Using Population Growth Rates 301

MELINDA G. KNUTSON, LARKIN A. POWELL, RANDY K. HINES, MARY A. FRIBERG, AND GERALD J. NIEMI
Abundance and Productivity of Warbling Vireos Across an Elevational Gradient in the Sierra Nevada 315

KATHRYN L. PURCELL
The Duet Code of the Female Black-bellied WrenDAVID M. LOGUESinging of Hermit Warblers: Dialects of Type I Songs 326

DAVID M. LOGUE
Singing of Hermit Warblers: Dialects of Type I Songs

336

STEWART W. JANES AND LEE RYKER
Long and Short Trips in Nonbreeding Buller's Albatrosses: Relationships with Colony Attendance and Body Mass 348

JEAN-CLAUDE STAHL AND PAUL MICHAEL SAGAR
Intercolony and Annual Differences in the Diet and Feeding Ecology of Little Tern Adults and Chicks in Portugal 366

TERESA CATRY, JAIME A. RAMOS, JORGE MARTINS, FILIPA PESTE, SUSANA TRIGO, VITOR H. PAIVA, ANA ALMEIDA, ANTÓNIO LUÍS, JORGE PALMA, AND PEDRO ANDRADE
Nut Selection by Captive Blue Jays:  Importance of Availability and Implications for Seed Dispersal 377

JEFFREY E. MOORE AND ROBERT K. SWIHART
Seasonal Differences in Immunological Condition of Three Species of Thrushes 389

JENNIFER C. OWEN AND FRANK R. MOORE
Tests of Ecological, Phenotypic, and Genetic Correlates of Extra-Pair Paternity in the House Sparrow 399

IAN R.K. STEWART, RICHARD D. HANSCHU, TERRY BURKE, AND DAVID F. WESTNEAT
Coevolutionary Interactions between Common Cuckoos and Corn Buntings 414

ANTON ANTONOV, BÅRD G. STOKKE, ARNE MOKSNES, AND EIVIN RØSKAFT
Colony Mapping:  A New Technique for Monitoring Crevice-Nesting Seabirds 423

HEATHER M. RENNER, MARTIN RENNER, JOEL H. REYNOLDS, ANN M. A. HARDING, IAN L. JONES, DAVID B. IRONS, AND G. VERNON BYRD
SHORT COMMUNICATIONS


Variation of West Nile Virus Antibody Prevalence in Migrating and Wintering Hawks in Central California 435

JOSHUA HULL, ANGUS HULL, WILLIAM REISEN, YING FANG, AND HOLLY ERNEST
Absence of Population Genetic Structure among Breeding Colonies of the Waved Albatross 440

KATHRYN P. HUYVAERT AND PATRICIA G. PARKER
Do Nearctic Northern Wheatears (Oenanthe oenanthe leucorhoa) Migrate Nonstop to Africa? 446

KASPER THORUP, TROELS ESKE ORTVAD, AND JØRGEN RABØL
First Evidence of Conspecific Brood Parasitism and Egg Ejection in Song Sparrows, with Comments on Methods Sufficient to Document These Behaviors 452

QURESH LATIF, J. LETITIA GRENIER, SACHA HEATH, GRANT BALLARD, AND MARK E. HAUBER
REVIEW


DNA Quality and Accuracy of Avian Malaria PCR Diagnostics: A Review 459

LEONARD A. FREED AND REBECCA L. CANN
COMMENTARY


Demography, Genetics, and the Value of Mixed Messages 474

JOHN M. PEARCE AND SANDRA L. TALBOT
Genetic and Demographic Criteria for Defining Population Units for Conservation:  The Value of Clear Messages 480

DANIEL ESLER, SAMUEL A. IVERSON, AND DANIEL J. RIZZOLO
BOOK REVIEWS


Antipredator Defenses in Birds and Mammals, by Tim Caro 484

PETER A. BEDNEKOFF
Animal Communication Networks, edited by Peter McGregor 485

LAUREN REED
Briefly Noted: Washington and Beyond
487

DAVID L. SWANSON