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Contents

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Pre-pleistocene Differentiation among Chat-tyrants
Jaime Garcia-Moreno, Peter Arctander, and Jon Fjeldsa

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Breeding Ecology and Behavior of the Hawaiian Hawk
Curtice R. Griffin, Peter W. Paton, and Thomas S. Baskett

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Risk-taking by Incubating Common Goldeneyes and Hooded Mergansers
Mark L. Mallory, Donald K. Mcnicol, Russell A. Walton, and Mark Wayland

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Effects of Age and Captivity on Plasma Chemistry Values of the Egyptian Vulture
Pablo M. Dobado-Berrios, Jose L. Tella, Olga Ceballos, and Jose A. Donazar

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Book Reviews
The Condor

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News and Notes
The Condor

Cover

Commentary

Short Communications

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Lek Behavior of the Gray-hooded Flycatcher
Marco Aurelio Pizo and Alexandre Aleixo

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Influences of Fluctuating River Flows on Bald Eagle Foraging Behavior
Bryan T. Brown, Lawrence E. Stevens, and Teresa A. Yates

Briefly Noted

 

Current Ornithology by Val Nolan Jr., Ellen D. Ketterson, Charles F. Thompson
Val Nolan Jr., Llen D. Ketterson, and Charles F. Thompson