Contents
Breeding Biology of the Savannah Sparrow on Kent Island
Clara L. Dixon
Daily Time Budget of the Postnesting Verdin
George T. Austin
Nest Site Selection and Competitive Interactions of Herring and Laughing Gulls in New Jersey
Joanna Burger and Joseph Shisler
Nest Site Characteristics among Five Species of Herons on the North Carolina Coast
Donald A. Mccrimmon Jr.
Notes on Birds of San Salvador Island (watlings), the Bahamas
J. Robert Miller
Radiotelemetry of Heart Rates from Free-ranging Gulls
John W. Kanwisher, Timothy C. Williams, John M. Teal, and Kenneth O. Lawson Jr.
Notes and News
The Auk
The Timing of Egg Laying by Northern Geese
Dennis G. Raveling
Experimental Analysis of Nest Predation in an Old-field Habitat
Bradley M. Gottfried and Charles F. Thompson
Evolution in the House Sparrow--vi Variability and Niche Width
Suzanne Hamilton and Richard F. Johnston
A Comparative Nesting Study of Red-tailed Hawks and Harris Hawks in Southern Arizona
William J. Mader
Some Parameters of Song Important in Conspecific Recognition by Gray Catbirds
Lauriel E. Fletcher and Douglas G. Smith
Nomenclature of the Black-bellied Whistling-duck
Richard C. Banks
Factors Affecting Nesting Success of the Glossy Ibis
Lynne M. Miller and Joanna Burger
Some Characteristics of Conditioned Aversion in Red-winged Blackbirds
John G. Rogers Jr.
Weather-dependent Foraging Rates of Wintering Woodland Birds
Thomas C. Grubb Jr.
Ontogeny of Vocalization in the Greater Rhea
Paul W. Beaver
Differential Response of Territorial Yellowthroats to the Songs of Neighbors and Non-neighbors
Joseph M. Wunderle Jr.
Wintering Behavior of Common Loons
Judith W. Mcintyre
Habitat Selection in Two Species of Spizella: a Concurrent Laboratory and Field Study
James J. Hebrard
Obituaries
The Auk
On the Status of Xolmis Dominicana
Gordon H. Orians
Auditory Censusing of Greater Sandhill Cranes
Alan J. Bennett
Cowbird Parasitism on the White-crowned Sparrow
Lewis Petrinovich and Thomas Patterson
Status and Nesting of the Yellow-billed Cuckoo in Puerto Rico
Cameron B. Kepler and Angela K. Kepler
Species of Formicariidae New to Colombia
Stephen M. Russell and Donald W. Lamm
Influence of Solute Concentration in Albumen on Water Loss from Avian Eggs
Theodore L. Taigen, Gary C. Packard, Paul R. Sotherland, and L. R. Hanka
Bald Eagles Nesting in Baja California
Charles J. Henny, Daniel W. Anderson, and C. Eugene Knoder
Rejecta Cast from Heron Nests as an Indicator of Food Chain Contamination
W. H. Rickard, J. D. Hedlund, and R. G. Schreckhise
Second Occurrence and First Successful Nesting Record of the Hook-billed Kite in the United States
Don Delnicki
Record of Prolonged Incubation by a Killdeer
Leon R. Powers
Emberiza Variabilis and Ficedula Parva New to North America and the Aleutian Islands, Alaska
Daniel D. Gibson and George E. Hall
First North American Records of Siberian House Martin Delichon Urbica Lagopoda
George E. Hall and Eugene A. Cardiff
Covers
Front Matter
The Auk
Back Matter
The Auk