Contents
Studies of the Brown Pelican
Ralph W. Schreiber and Robert W. Risebrough
Behavioral Responses of Migrating Birds to Daylight and Darkness: a Radar and Direct Visual Study
Sidney A. Gauthreaux Jr.
Orientation Behavior of Night-migrating Birds (european Robins) during Late Afternoon and Early Morning Hours
Wolfgang Wlltschko and Hiltrud Hock
Diurnal and Seasonal Activities of a Post-breeding Population of Gulls in Southeastern Ontario
F. Cooke and R. K. Ross
Publication Notes and Notices
Wilson Bulletin
Variations in Songs of Vesper Sparrows in Oregon
Donald E. Kroodsma
Publication Notes and Notices
Wilson Bulletin
Factors Influencing Pellet Egestion and Gastric Ph in the Barn Owl
Charles R. Smith and Milo E. Richmond
Analysis of Measurements, Weights, and Composition of Common and Roseate Tern Eggs
Charles T. Collins and Mary Lecroy
The Role of Avian Rictal Bristles
Roger J. Lederer
Publication Notes and Notices
Wilson Bulletin
Ornithological News
Wilson Bulletin
Hawaiian Birds 1972
Andrew J. Berger
Ornithological Literature
Wilson Bulletin
Covers
Back Matter (PDF)
Wilson Bulletin
Front Matter (PDF)
Wilson Bulletin
General Notes
Probable Bulwer's Petrel Off Key West, Florida
Joseph W. Taylor
Spring Migration of the Gannet in Florida Waters
Terry C. Maxwell
Aerial Feeding in the Snowy Egret
James A. Kushlan
Observations on the Status, Ecology, and Behavior of Soras Wintering in Trinidad, West Indies
Michael Gochfeld
Lek Behavior in the Broad-tailed Hummingbird
David P. Barash
Steller's Jays Prey on Gray-headed Juncos and a Pygmy Nuthatch during Periods of Heavy Snow
Steven W. Carothers, N. Joseph Sharber, and Russell P. Balda
Adult Carolina Chickadee Carries Young
John W. Goertz and Kim Rutherford
Habitat Differences of Swainson's and Hermit Thrushes
Douglass H. Morse