Contents
Wing and Tail Molt of the Sparrow Hawk
Ernest J. Willoughby
Behavioral Responses of Brown-headed Cowbirds to Nests and Eggs
Robert K. Selander and Suh Yung Yang
In Memoriam: James Paul Chapin
Herbert Friedmann
More Hybrid Hummingbirds from the United States
Lester L. Short Jr. and Allan R. Phillips
Avian Heart Size and Cardiovascular Performance
Alan H. Brush
A Nesting Study of Spizella Pallida
W. Ray Salt
In Memoriam: Reuben Myron Strong
A. L. Rand
Proceedings of the Eighty-third Stated Meeting of the American Ornithologists' Union
L. Richard Mewaldt
Cannibalism at a Broad-winged Hawk Nest
Donald S. Heintzelman
Recent Literature
The Auk
Notes and News
The Auk
Correspondence
The Auk
General Notes
A Record of the Gray Vireo in Wisconsin
Helmut C. Mueller and Daniel D. Berger
Second Nestings of the Wood Duck
Frank B. Mcgilvrey
Subspecies of Recent and Fossil Birds
Joseph R. Jehl Jr.
Notes on Stomach Contents and Weights of Some Chilean Birds of Prey
J. Keever Greer and Dillman S. Bullock
Utilization of Shad as Winter Food by Birds
William E. Southern
Notes on the Food Habits of the Korean Pheasant
C. M. Loveless
The Red-winged Blackbird in Alaska
Brina Kessel
Antiphonal Dueting and Evidence for Auditory Reaction Time in the Orange-chinned Parakeet
Dennis M. Power
Covers
Front Matter
The Auk
Back Matter
The Auk