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Contents

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Patterns and Dynamics of Shorebird Use of California's Central Valley
W. David Shuford, Gary W. Page, and Janet E. Kjelmyr

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Selection of Forage-fish Schools by Murrelets and Tufted Puffins in Prince William Sound, Alaska
William D. Ostrand, Kenneth O. Coyle, Gary S. Drew, John M. Maniscalco, and David B. Irons

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Competition for Food in Urban Pigeons: the Cost of Being Juvenile
Daniel Sol, David M. Santos, Joseh Garcia, and Mariano Cuadrado

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Variations in Growth of Roseate Tern Chicks: Ii Early Growth as an Index of Parental Quality
Ian C. Nisbet, Jeffrey A. Spendelow, Jeff S. Hatfield, James M. Zingo, and Greg A. Gough

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Effects of Cowbird Parasitism on Parental Provisioning and Nestling Food Acquisition and Growth
Donald C. Dearborn, Angela D. Anders, and Frank R. Thompson III

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Paternity and the Relatedness of Helpers in the Cooperatively Breeding Bell Miner
Kelvin F. Conrad, Michael F. Clarke, Raleigh J. Robertson, and Peter T. Boag

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A Quantitative Analysis of Woodpecker Drumming
Robert D. Stark, Danielle J. Dodenhoff, and Eric V. Johnson

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How Well Do Artificial Nests Estimate Success of Real Nests?
Gina R. Wilson, Margaret C. Brittingham, and Laurie J. Goodrich

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Book Reviews
The Condor

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Briefly Noted
The Condor

Cover

Short Communications

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Satellite Tracking of Magellanic Penguin Migration
David L. Stokes, P. Dee Boersma, and Lloyd S. Davis

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Leucocytozoon Simondi in Emperor Geese from the Yukon-kuskokwim Delta in Alaska
Tuula E. Hollmen, J. Christian Franson, Lynn H. Creekmore, Joel A. Schmutz, and Ada C. Fowler