THE CONDOR
Volume 108, Number 3
August 2006 C.E.
Table of Contents

FEATURE ARTICLES

Intraspecific Phylogeography and Adaptive Divergence in the White-headed Woodpecker
489

MATTHEW P. ALEXANDER AND KEVIN J. BURNS
Song Learning by Chipping Sparrows:  When, Where, and from Whom 509

WAN-CHUN LIU AND DONALD E. KROODSMA
The Inflected Alarm Caw of the American Crow: Differences in Acoustic Structure among Individuals and Sexes 518

JESSICA L. YORZINSKI, SANDRA L. VEHRENCAMP, ANNE B. CLARK, AND KEVIN J. MCGOWAN
Does Life History Predict Risk-Taking Behavior of Wintering Dabbling Ducks? 530

JOSHUA T. ACKERMAN, JOHN M. EADIE, AND THOMAS G. MOORE
Sex, Age, and Body Size Distributions of Western Sandpipers during the Nonbreeding Season with Respect to Local Habitat 547

GUILLERMO FERNÁNDEZ AND DAVID B. LANK
Territoriality, Site Fidelity, and Survivorship of Willow Flycatchers Wintering in Costa Rica 558

THOMAS J. KORONKIEWICZ, MARK K. SOGGE, CHARLES VAN RIPER III, AND EBEN H. PAXTON
Polygyny and Extra-Pair Paternity in a Population of Southwestern Willow Flycatchers 571

TALIMA PEARSON, MARY J. WHITFIELD, TAD C. THEIMER, AND PAUL KEIM
Breeding Strategies of a Socially Monogamous Neotropical Passerine: Extra-Pair Fertilizations, Behavior, and Morphology 579

CARLOS B. V. CARVALHO, REGINA H. MACEDO, AND JEFFERSON A. GRAVES
Changes in Egg Size and Clutch Size with Elevation in a Wyoming Population of Mountain Bluebirds 591

L. SCOTT JOHNSON, EMILENE OSTLIND, JESSICA L. BRUBAKER, SUSAN L. BALENGER, BONNIE G. P. JOHNSON, AND HAROLD GOLDEN
Geographic Variation in the Trade-Off between Nestling Growth Rate and Body Condition in the Tree Swallow 601

DANIEL R. ARDIA
Chick Growth Variability and Parental Provisioning in the Magnificent Frigatebird 612

EMILIO TOBÓN AND JOSÉ LUIS OSORNO
Productivity of Black Oystercatchers:  Effects of Recreational Disturbance in a National Park 623

JULIE A. MORSE, ABBY N. POWELL, AND MICHAEL D. TETREAU
Green-tailed Towhee Response to Prescribed Fire in Montane Shrubland 634

GRETCHEN JEHLE, JULIE A. SAVIDGE, AND NATASHA B. KOTLIAR
Prebasic Molt and Molt-Related Movements in Ash-Throated Flycatchers 647

LUKE K. BUTLER, SIEVERT ROHWER, AND MICHELLE ROGERS
Slave to the Tides: Spatiotemporal Foraging Dynamics of Spring Staging Black Brant 661

JEFFREY E. MOORE AND JEFFREY M. BLACK
Nutritional Condition of Pacific Black Brant Wintering at the Extremes of Their Range 678

DANIELLE D. MASON, PERRY S. BARBOZA, AND DAVID H. WARD
Combining Breeding Bird Survey and Distance Sampling to Estimate Density of Migrant and Breeding Birds 691

SCOTT G. SOMERSHOE, DANIEL J. TWEDT, AND BRUCE REID

SHORT COMMUNICATIONS


Monitoring Low Density Avian Populations:  An Example Using Mountain Plovers 700

VICTORIA J. DREITZ, PAUL M. LUKACS, AND FRITZ L. KNOPF
Relationship between Aspen Heartwood Rot and the Location of Cavity Excavation by a Primary Cavity-Nester, the Red-naped Sapsucker 706

NEIL LOSIN, CHRIS H. FLOYD, TODD E. SCHWEITZER, AND SARAH J. KELLER
Sex-Related Natal Dispersal of Pied Flycatchers: How Far Away from Home? 711

NIKITA CHERNETSOV, LEONID V. SOKOLOV, VLADISLAV KOSAREV, DMITRY LEOKE, MIKHAIL MARKOVETS, ARSENY TSVEY, AND ANATOLY P. SHAPOVAL
A Small Suboscine-Like Passeriform Bird from the Early Oligocene of France 717

GERALD MAYR AND ALBRECHT MANEGOLD
Two New Late Pleistocene Avifaunas from New Mexico 721

REBECKA L. BRASSO AND STEVEN D. EMSLIE
Lifetime Reproductive Success of Bald Eagles in Northern California 730

J. MARK JENKINS AND RONALD E. JACKMAN
Pattern of Damage to Albino Great Frigatebird Flight Feathers Supports Hypothesis of Abrasion by Airborne Particles 736

RALPH W. SCHREIBER, ELIZABETH A. SCHREIBER, ASHLEY M. PEELE, AND EDWARD H. BURTT JR.
Eastern Bluebirds Eject Brown-headed Cowbird Eggs 741

BRIAN D. PEER, LYNDON R. HAWKINS, EDWIN P. STEINKE, PATRICIA BLAIR BOLLINGER, AND ERIC K. BOLLINGER