Contents
Bi-parental Care in Killdeer: an Adaptive Hypothesis
Sarah Lenington
The Thermoregulatory Significance of the Winter Roost-sites Selected by Robins in Eastern Washington
Glenn E. Walsberg and James R. King
Experiments in Feeding Behavior of the Anna Hummingbird
Thomas G. Wheeler
Territorial Behavior in a Pair of White-throated Sparrows
Frederick E. Wasserman
Spatial and Temporal Distribution of Rails in Colorado
Herman J. Griese, Ronald A. Ryder, and Clait E. Braun
Notes on Parasitism by Bronzed Cowbirds in El Salvador
Walter A. Thurber and Amanda Villeda
Ornithological Literature
Wilson Bulletin
Ornithological News
Wilson Bulletin
Report of the Conservation Committee--1978
Wilson Bulletin
Covers
Back Matter (PDF)
Wilson Bulletin
Front Matter (PDF)
Wilson Bulletin
General Notes
The Determination of Runt Eggs in Birds
Walter D. Koenig
Breeding Biology of Eastern Phoebes in Northern Wisconsin
Craig A. Faanes
Variation in Promiscuity among Red-winged Blackbirds
Thomas A. Roberts and James J. Kennelly
Observations of a White-winged Crossbill Invasion of Southeastern Manitoba
Spencer G. Sealy, Donald A. Sexton, and K. Michael Collins
Winter Hunting Behavior of a Snowy Owl in Michigan
Michael L. Chamberlin
Warblers Feeding from Ice
Martin K. Mcnicholl and J. Paul Goossen
Rough-winged Swallow Feeding on Fly Larvae
Richard A. Wolinski
Sandhill Cranes Prey on Canada Goose Eggs
Ronald H. Hoffman
Adult Brown Pelican Robs Great Blue Heron of Fish
Keith L. Bildstein
Food Habits of White Pelicans during 1976 and 1977 at Chase Lake National Wildlife Refuge, North Dakota
Gary R. Lingle and Norman F. Sloan
Notes on the Birds of Honduras
Fred C. Sibley, George F. Barrowclough, and Charles G. Sibley
A Nest of the Ringed Gnatpipit (corythopis Torquata)
Yoshika Oniki and Edwin O. Willis
First Breeding Record of the Double-crested Cormorant in Virginia
Charles R. Blem, William H. Gutzke, and Claire Filemyr
Corn Cob Manipulation in Northern Harriers
Keith L. Bildstein