Contents
In Memoriam: Alfred Otto Gross
Raymond A. Paynter Jr.
Social Organization of Penned Mourning Doves
W. Reid Goforth and Thomas S. Baskett
Courtship Feeding in Gallinaceous Birds
A. W. Stokes and H. Warrington Williams
Sex Ratio and Mortality in the Brown-headed Cowbird
James A. Darley
Skeletal Analysis of the Ammodramus-ammospiza Grassland Sparrow Complex: a Numerical Taxonomic Study
Jerome D. Robins and Gary D. Schnell
The Territory and Its Density Dependent Effect in Spiza Americana
John L. Zimmerman
Selected Vocalizations of the Common Crow
Dwight R. Chamberlain and George W. Cornwell
Foraging Behavior of Mangrove Swallows at Barro Colorado Island
Robert E. Ricklefs
Territoriality in Alaskan Spruce Grouse
Laurence N. Ellison
Periodical Literature
The Auk
Obituaries
The Auk
Notes and News
The Auk
General Notes
Nesting of the Ringed Kingfisher in the United States
Albert D. Mcgrew
Great White Heron Captures and Eats Black-necked Stilt
Clark S. Olson and H. Mcclure Johnson
Red-tailed Hawk Preys on Cattle Egret
William D. Courser and James J. Dinsmore
Franklin's Gull and Bridled Tern in Southern Chile
Roger Tory Peterson and George E. Watson
First Authentic North American Record of the British Storm Petrel (hydrobates Pelagicus)
Raymond Mcneil and Jean Burton
Black Vultures Attack Live Turtle Hatchlings
N. Mrosovsky
First Report of Sandwich Terns in Peru
Kenneth E. Campbell Jr.
Publication Dates of the North American Fauna Series
Richard C. Banks
Bill Deformity of a Yellow-headed Blackbird
David A. Easterla and James M. Todd
What is Amazilia Microrhyncha?
Allan R. Phillips
Covers
Front Matter
The Auk
Back Matter
The Auk