Contents
Observations on Nesting Ornate Hawk-eagles in Guatemala
Bruce Lyon and Albert Kuhnigk
A Model of Energy Consumption in Bald Eagles: an Evaluation of Night Communal Roosting
George P. Keister Jr., Robert G. Anthony, and H. Richard Holbo
Causes of Recording Errors in Singing Bird Surveys
Jonathan Bart
Patterns of Association of Secondary Species in Roosts of European Starlings and Common Grackles
Donald F. Caccamise and Joseph Fischl
Breeding Robins and Nest Predators: Effect of Predator Type and Defense Strategy on Initial Vocalization Patterns
Bradley M. Gottfried, Kathryn Andrews, and Michaela Haug
Aggregations of Cory's Shearwaters (calonectris Diomedea) at Gulf Stream Fronts
J. Christopher Haney and Philip A. Mcgillivary
Brown Pelican Populations and Pollutants in Texas 1975-1981
Kirke A. King, David R. Blankinship, Emilie Payne, Alexander J. Krynitsky, and Gary L. Hensler
Ornithological Literature
Wilson Bulletin
Special Conservation Review
Wilson Bulletin
Announcements
Wilson Bulletin
Covers
Back Matter (PDF)
Wilson Bulletin
Front Matter (PDF)
Wilson Bulletin
General Notes
Home Range and Habitat Use of Forest-dwelling Mallards in Minnesota
Ronald E. Kirby, John H. Riechmann, and Lewis M. Cowardin
Observations of the Formation of a Sage Grouse Lek
Robert J. Gates
Nest Usurpation and Female Competition for Breeding Opportunities by Tree Swallows
David Leffelaar and Raleigh J. Robertson
Wintering Bald Eagles along the Rio Yaqui, Sonora, Mexico
Bryan T. Brown and Peter L. Warren
Raptors Killing Raptors
Daniel Klem Jr., Brian S. Hillegass, and Diane A. Peters
Acorn Woodpecker Mutilates Nestling Red-breasted Sapsuckers
W. David Shuford
Timing of Primary Molt in First-year Golden-plovers and Some Evolutionary Implications
Oscar W. Johnson
Wing Molt by a Nesting Pied-billed Grebe
James E. Otto and David L. Strohmeyer
Partition of Water Loss from the Eggs of the Sooty Tern Between the Pre-pipping and Pipped Periods
G. C. Whittow
Eastward Range Expansion of the Marbled Godwit in South America
Raymond Mcneil, Jose Ramon Rodrigues, and Francine Mercier
A Record of Extreme Leucism in the Carolina Wren
Joseph J. Seneca