Contents
Feeding Behavior and Ecology of the Goliath Heron
Douglas W. Mock and Karilyn C. Mock
Sex Ratio of Western Gulls on Santa Barbara Island, California
G. L. Hunt Jr., J. C. Wingfield, A. Newman, and D. S. Farner
Reproductive Bioenergetics of Wood Ducks
Ronald D. Drobney
Nesting Chronology of the Eastern Brown Pelican
Ralph W. Schreiber
Use of Space by Lapland Longspurs Breeding in Arctic Alaska
P. R. Tryon and S. F. Maclean
Time and Energy Budgets of the Willow Flycatcher (empidonax Traillii) during the Breeding Season
Amelia O. Ettinger and James R. King
New Estimates of Weight Loss in Birds during Nocturnal Migration
David J. T. Hussell and Anne B. Lambert
Experimental Manipulation of Brood Size in Red-winged Blackbirds
James R. Cronmiller and Charles F. Thompson
Energetics of Postnatal Growth in Leach's Storm-petrel
Robert E. Ricklefs, Susan C. White, and John Cullen
Effects of Grass Length and Mowing on Foraging Behavior of the American Robin (turdus Migratorius)
Leonard A. Eiserer
Preliminary Observations on the Occurrence and Evolution of Polyandry in the Galapagos Hawk (buteo Galapagoensis)
John Faaborg, Tjitte De Vries, Cindy B. Patterson, and Curtice R. Griffin
Distribution, Species Abundance, and Nesting-site Use of Atlantic Coast Colonies of Herons and Their Allies
Thomas W. Custer, Ronald G. Osborn, and William F. Stout
In Memoriam: Alexander Wetmore
Paul H. Oehser
On Getting Involved
Richard C. Banks
American and European Tern Calls
Barbara W. Massey
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
The Diet of the Burrowing Owl in Central Chile and Its Relation to Prey Size
Roberto P. Schlatter
Breeding Strategies of Male Yellow-headed Blackbirds: Results of a Removal Experiment
Allen T. Rutberg and Sievert Rohwer
Growth of Nestling Rufous Hununingbirds
Goerge D. Constantz
Nest-site Selection in the Brown Jay
Marcy F. Lawton and Robert O. Lawton