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Contents

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Breeding Biology and Home Range of Two Ciccaba Owls
Richard P. Gerhardt, Normandy Bonilla Gonzalez, Dawn Mcannis Gerhardt, and Craig J. Flatten

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Diet of the Chaco Chachalaca
Sandra M. Caziani and Jorge J. Protomastro

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Trade-Offs and Constraints on Eastern Kingbird Parental Care
Stephanie M. Rosa and Michael T. Murphy

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Extended Flight-Songs of Vesper Sparrows
Jeffrey V. Wells and Peter D. Vickery

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Index to Volume 106, 1994
Kathleen G. Beal

Covers

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Back Matter (PDF)
Wilson Bulletin

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Front Matter (PDF)
Wilson Bulletin

Short Communications

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Genetic Structure in a Wintering Population of American Coots
Sudan Mcalpine, Olin E. Rhodes Jr., Clark D. Mccreedy, and I. Lehr Brisbin

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Birds Breeding in or Beneath Osprey Nests in the Great Lakes Basin
Peter J. Ewins, Michael J. R. Miller, Michael E. Barker, and Sergej Postupalsky

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Nest-Site Characteristics of Four Raptor Species in the Argentinian Patagonia
Alejandro Travaini, Jose A. Donazar, Olga Ceballos, Martin Funes, Alejandro Rodriguez, and Javier Bustamante

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Sleeping and Vigilance in the White-Faced Whistling-Duck
Michael Gauthier-Clerc, Alain Tamisier, and Frank Cezilly

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Lead Poisoning in a Mississippi Sandhill Crane
J. Christian Franson and Scott G. Hereford