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Foraging Niches and the Structure of Forest Bird Communities in Contrasting Montane Habitats
Stephen R. Sabo and Richard T. Holmes

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Recent Publications
The Condor

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Feeding Rates of Warblers in Spring
Jean W. Graber and Richard R. Graber

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Behavioral Ecology of Fledgling Brown-headed Cowbirds and Their Hosts
Paul W. Woodward

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Effects of Human Disturbance on Reproductive Success in the Black Skimmer
Carl Safina and Joanna Burger

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A Contextual Analysis of Two Song Variants in the Bobolink
James F. Wittenberger

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Gut Size, Body Weight, and Digestion of Winter Food by Grouse and Ptarmigan
Robert Moss

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The Composition of Petrel Eggs
John Warham

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Breeding Ecology of the Mississippi Kite in Arizona
Richard L. Glinski and Robert D. Ohmart

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Nest Success and Nesting Habits of Eastern Kingbirds and Other Flycatchers
Michael T. Murphy

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Structure of Display Flights in the Least Sandpiper
Edward H. Miller

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Bias in Density Estimates Due to Movement of Birds
Stepehn L. Granholm

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Commentary: on Sonograms, Harmonics, and Assumptions
The Condor

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News and Notes
The Condor

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Back Matter (PDF)
The Condor

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Front Matter (PDF)
The Condor

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Allopreening by Brown-headed Cowbirds
Thomas A. Webber

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Possible "deceptive" Use of Song by Female Black-headed Grosbeaks
Gary Ritchison

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Hummingbirds Feeding from Exudates on Diseases Scrub Oak
Peter G. Kevan, Sherrene D. Helens, and Irene Baker

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Records of Allen's Hummingbird in Louisiana and Possible Rufous X Allen's Hummingbird Hybrids
Nancy L. Newfield

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Identification and Occurrence of Blackpoll Warblers in Southern Middle America
F. Gary Stiles and Rafael G. Campos

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Predation on Steamer-ducks by Killer Whale
Roberto Straneck, Bradley C. Livezey, and Philip S. Humphrey

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Ross' Geese Increasing in Central North America
Robert B. Frederick and Rex R. Johnson

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Occurrence of Willow Warbler (phylloscopus Trochilus) in North America Refuted
Don Roberson and Frank A. Pitelka