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Territorial Behavior of the Sage Sparrow: Spatial and Random Aspects
Terrell Rich

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Intersexual Niche Partitioning in Downy Woodpeckers
Joseph B. Williams

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Implications of Juvenile Harassment in Purple Martins
Charles R. Brown and Erik J. Bitterbaum

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Nestling Foods and Foraging Patterns in the Clay-colored Sparrow
Richard W. Knapton

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Geographic Variation in the Insulative Qualities of Nests of the Northern Oriole
V. H. Schaefer

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Fall Migration of Saw-whet Owls at Prince Edward Point, Ontario
R. D. Weir, F. Cooke, M. H. Edwards, and R. B. Stewart

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Directions and Timing of Great Blue Heron Foraging Flights from a California Colony: Implications for Social Facilitation of Food Finding
Helen M. Pratt

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Choice of Nest Boxes by Common Goldeneyes in Ontario
Harry G. Lumsden, R. E. Page, and M. Gauthier

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Ornithological Literature
Wilson Bulletin

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Index to Volume 92, 1980
Nancy J. Flood, Gary R. Bortolotti, and David J. Brooks

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Back Matter (PDF)
Wilson Bulletin

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Front Matter (PDF)
Wilson Bulletin

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First Description of the Nest, Eggs and Nestling of the Guayaquil Woodpecker (campephilus [phloeoceastes] Gayaquilensis)
Morris D. Williams

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The Nest and Territoriality of a Female Tyrian Metaltail
Barbara K. Snow

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Male Escorting and Protecting Females at the Nest Cavity in Mountain Blue Birds
Harry W. Power

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Solitary Vireo Nest Used by a Western Flycatcher
Geoffrey A. Hammerson and Beth P. Lapin

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Bilateral Wing Display in the Sage Thrasher
Terrell D. Rich

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A Comparison of Avian Foraging at Flowering Trees in Panama and New Guinea
Bruce Beehler

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Foraging by Yellow-bellied Sapsuckers in Central Illinois during Spring Migration
Joseph B. Williams

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Mallards Capture and Eat American Toads
Nancy S. Mueller

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Dipper Swallowed by Trout
Charles L. Elliott and Steve Peck

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Team-hunting and Food Sharing in Parasitic Jaegers
Stephen G. Pruett-Jones

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Incubating Wood Duck and Hooded Merganser Hens Killed by Black Rat Snakes
T. T. Fendley

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Sandhill Cranes Nesting in Illinois
Joel Greenberg

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A Mallard X Mottled Duck Hybrid
David A. Nelson