Contents
The Constancy of Incubation
Alexander F. Skutch
Maintenance Activities of the American Redstart
Millicent S. Ficken
The Hatching Muscle in Franklin's Gull
Harvey I. Fisher
Noteworthy Records of Birds from the Republic of Mexico
Max C. Thompson
Why Do Birds Sing?
Olaus J. Murie
Ornithological News
Wilson Bulletin
Letter to the Editor
Wilson Bulletin
Ornithological Literature
Wilson Bulletin
Annual Report of the Conservation Committee
Thomas G. Scott
Covers
Back Matter (PDF)
Wilson Bulletin
Front Matter (PDF)
Wilson Bulletin
General Notes
A Catbird Helper at a House Wren Nest
Val Nolan Jr. and Raymond Schneider
Meadowlark Killed by Electric Fence
James Tate Jr.
Wing Length, Body Weight, and Geography
D. F. Owen
A Count of Bald Eagles Summering along a Shallow New England Lake
Walter R. Spofford
Anting Behavior of a Wood Thrush with a Snail
John K. Terres
A Prolonged Starling Fight
James Baird
Dowitcher Attacks Willet
E. I. Stearns
An Opossum-titmouse Incident
John W. Goertz
An Unusual Brown Thrasher Fatality
Denzel E. Ferguson