FEATURE ARTICLES

Crossing the Ultimate Ecological Barrier: Evidence for an 11 000-km-long Nonstop Flight from Alaska to New Zealand and Eastern Australia by Bar-tailed Godwits

ROBERT E. GILL, JR., THEUNIS PIERSMA, GARY HUFFORD, RENE SERVRANCKX AND ADRIAN RIEGEN

Mitochondrial DNA Variation, Species Limits, and Rapid Evolution of Plumage Coloration and Size in the Savannah Sparrow

ROBERT M. ZINK, JAMES D. RISING, STEVE MOCKFORD, ANDREW G. HORN, JONATHAN M. WRIGHT, MARTY LEONARD AND M.C. WESTBERG

Dietary Specialization on High Protein Seeds by Adult and Nestling Serins

FRANCISCO VALERA, RICHARD H. WAGNER, MARILO ROMERO-PUJANTE, JOSE E. GUTIERREZ AND PEDRO J. REY

Habitat-Specific Foraging of Prothonotary Warblers: Deducing Habitat Quality

JAMES E. LYONS

Are Current Contaminant Concentrations in Eggs and Breeding Female Lesser Scaup of Concern?

GLEN A. FOX, M. C. MACCLUSKIE AND R. W. BROOK

Geographical Variation of St. Lucia Parrot Flight Vocalizations

PATRICK M. KLEEMAN AND JAMES D. GILARDI

Breeding Biology of the Thorn-tailed Rayadito (Furnariidae) in South-Temperate Rainforests of Chile

JUAN MORENO, SANTIAGO MERINO, RODRIGO A. VÁSQUEZ AND JUAN J. ARMESTO

Age-Specific Variation in Apparent Survival Rates of Male Lesser Prairie-Chickens

CHRISTIAN A. HAGEN, JAMES C. PITMAN, BRETT K. SANDERCOCK, ROBERT J. ROBEL AND ROGER D. APPLEGATE

Gender Identification and Growth of Juvenile Lesser Prairie-Chickens

JAMES C. PITMAN, CHRISTIAN A. HAGEN, ROBERT J. ROBEL, THOMAS M. LOUGHIN AND ROGER D. APPLEGATE

Impacts of Housing Developments on Wood Thrush Nesting Success in Hardwood Forest Fragments

JUDITH PHILLIPS, DAWN BURKE, ERICA NOL AND WENDY DUNFOR

A New Condor (Ciconiiformes, Vulturidae) from the Late Miocene/Early Pliocene Pisco Formation, Peru

MARCELO STUCCHI AND STEVEN D. EMSLIE

A New Fossil Furnariid from the Pleistocene of Uruguay, with Remarks on Nasal Type, Cranial Kinetics, and Relationships of the Extinct Genus Pseudoseisuropsis

SANTIAGO CLARAMUNT AND ANDRÉS RINDERKNECHT

SHORT COMMUNICATIONS

West Nile Virus Devastates an American Crow Population

CAROLEE CAFFREY, SHAUNA C.R. SMITH AND TIFFANY J. WESTON

Influence of Predation on Nest-site Reuse by an Open-cup Nesting Neotropical Passerine

JENNIFER NESBITT STYRSKY

Quantifying Male Wood Thrush Nest-Attendance and its Relationship to Nest Success

KENNETH A. SCHMIDT AND CHRISTOPHER J. WHELAN

Ultraviolet Beak Spots in King and Emperor Penguins

PIERRE JOUVENTIN, PAUL M. NOLAN, JONAS ÖRNBORG AND F. STEPHEN DOBSON

Nocturnal Hypothermia in Seasonally Acclimatized Mountain Chickadees and Juniper Titmice

SHELDON J. COOPER AND JAMES A. GESSAMAN

Evaluation of Allozyme and Microsatellite Variation in Texas and Florida Mottled Ducks

CHRISTEN L. WILLIAMS, ALAN M. FEDYNICH, DAN B. PENCE AND OLIN E. RHODES, JR.

Parental Body Condition does not Correlate with Offspring Sex Ratio in Cory's Shearwaters

M. GENOVART, D. ORO, M.G. FORERO, J. M. IGUAL, J. GONZÁLEZ-SOLS, AND X. RUIZ

Incubation Behaviors and Patterns of Nest Attendance in Common Goldeneyes in Interior Alaska

JOSHUA H. SCHMIDT, ERIC J. TAYLOR AND ERIC A. REXSTAD

Do Wintering Harlequin Ducks Forage Nocturally at High Latitudes?

DANIEL J. RIZZOLO, DANIEL ESLER, DANIEL D. ROBY AND ROBERT JARVIS

Variation in Human Disturbance Differentially Affects Predation Risk Assessment in Western Gulls

NICOLAAS V. WEBB AND DANIEL T. BLUMSTEIN

COMMENTARY

Redefining the Distributional Boundaries of the Northern and California Spotted Owls: Implications for Conservation

R. J. GUTIÉRREZ AND GEORGE F. BARROWCLOUGH

BOOK REVIEWS

Shorebirds. An Illustrated Behavioural Ecology, by van de Kam et al.

NILS WARNOCK

Life Along Land's Edge: Wildlife On The Shores of Roebuck Bay, Broome, by Rogers et al.

FALK HUETTMANN