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Contents

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The Effects of Late-incubation Body Mass on Reproductive Success and Survival of Canvasbacks and Redheads
Todd W. Arnold, Michael G. Anderson, Robert B. Emery, Michael D. Sorenson, and Christina N. Sobrino

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Incubation Behavior and Body Mass of Female Greater Snow Geese
Austin Reed, R. John Hughes, and Gilles Guathier

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A Catalog of Song Syllables of Indigo and Lazuli Buntings
Myron C. Baker and Jeanette T. Boylan

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Book Reviews
Christopher W. Thompson

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News and Notes
The Condor

Covers

Short Communications

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Use of Elisa for Determination of Plasma Prolactin Levels in the House Wren
Sharon M. Sintich, Michelle K. Keagle, R. Given Harper, and Ian G. Welsford

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Composition of Eared Grebe and Western Grebe Eggs
Wendy L. Hill, Marybeth Browne, and Cynthia Hardenbergh

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Artificial Snags as Nesting Sites for Chickadees
Thomas C. Grubb and C. L. Bronson

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Renesting by Spotted Owls
Eric D. Forsman, Alan Giese, David Manson, and Stan Sovern