Contents
Social Organization of Cooperatively Polyandrous White-winged Trumpeters (psophia Leucoptera)
Peter T. Sherman
How Convergent is the American Redstart (setophaga Ruticilla, Parulinae) with Flycatchers (tyrannidae) in Morphology and Feeding Behavior?
Allen Keast, Laura Pearce, and Sari Saunders
Brown Noddies on Cayo Noroeste, Culebra, Puerto Rico: what Happened in 1990?
Ralph D. Morris and John W. Chardine
Mechanisms of Short Incubation Period in Brood-parasitic Cowbirds
Gustavo H. Kattan
Assessing the Consequences of Brood Parasitism and Nest Predation on Seasonal Fecundity in Passerine Birds
Craig M. Grzybowski
Gapes of Sexually Dimorphic Blackbird Nestlings Do Not Show Sexually Dimorphic Growth
Anne Barrett Clark
Long-term Trends in Habitat Selection by Kentucky Warblers
William J. Mcshea, M. Victoria Mcdonald, Eugene S. Morton, Rose Meier, and John H. Rappole
Hormonal and Reproductive Effects of Low Levels of Petroleum Fouling in Magellanic Penguins (spheniscus Magellanicus)
Gene S. Fowler, John C. Wingfield, and P. Dee Boersma
Influence of Group Size and Habitat Type on Reproductive Success in Common Murres (uria Aalge)
Julia K. Parrish
Variation in Male Plumage and Behavior of the Hawaii Akepa
Jaan K. Lepson and Leonard A. Freed
Responses of Zebra Finches (taeniopygia Guttata) to Experimental Intraspecific Brood Parasitism
Benjamin Fenske and Nancy Tyler Burley
Comparative Study of Winter Body Composition of Resident and Migrant Grey-breasted Silvereyes
Ken Chan
Kleptoparasitism of American Coots by Gadwalls and Its Relationship to Social Dominance and Food Abundance
Craig R. Leschack and Gary R. Hepp
Color, Size, and Location of Artificial Fruits Affect Sucrose Avoidance by Cedar Waxwings and European Starlings
Michael L. Avery, David G. Decker, John S. Humphrey, A. Alycin Hayes, and Cynthia C. Laukert
Genetic Diversity in Two Avian Species Formerly Endemic to Guam
Susan M. Haig and Jonathan D. Ballou
Phylogeny of Social Behavior in Aphelocoma Jays: a Role for Hybridization?
Jerram L. Brown and Shou-Hsien Li
Monogamy in Leach's Storm-petrel: Dna-fingerprinting Evidence
Robert A. Mauck, Thomas A. Waite, and Patricia G. Parker
In Memoriam: Wilbur Brooks Quay, 1927-1994
Oliver P. Pearson
In Memoriam: David E Davis, 1913-1994
John J. Christian
Announcement
The Auk
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
Stable-isotope Ratios of Carbon and Nitrogen in Feathers Indicate Seasonal Dietary Shifts in Northern Fulmars
David R. Thompson and Robert W. Furness
Fear and Food Recognition in Naive Common Ravens
Bernd Heinrich, John Marzluff, and William Adams
Survival Rates of Puerto Rican Birds: Are Islands Really that Different?
John Faaborg and Wayne J. Arendt
Adoption of Chicks among Thick-billed Murres
Anthony J. Gaston, Christine Eberl, Mark Hipfner, and Kara Lefevre
Reinterpretation of the Probable Parentage of a Hybrid Wood-warbler (seiurus X Dendroica)
Kenneth C. Parkes
Mammalian Irritants as Chemical Stimuli for Birds: the Importance of Training
J. Russell Mason and Larry Clark
Interspecific Cooperative Nesting Between Barn Swallows and Say's Phoebes in South-central New Mexico
Jeffrey M. Kozma and Nancy E. Mathews
Size and Abundance: Breeding Population Density of the Calliope Hummingbird
William A. Calder and Lorene L. Calder