Contents
Otus Marshalli, a New Species of Screech-owl from Per
John S. Weske and John W. Terborgh
Bird Communities along a Montane Sere: Community Structure and Energetics
Kimberly G. Smith and James A. Macmahon
Parental Components of Variance in Growth Rate and Body Size of Nestling European Starlings (sturnus Vulgaris) in Eastern Pennsylvania
Robert E. Ricklefs and Susan Peters
Interhabitat Movements by Sanderlings in Relation to Foraging Profitability and the Tidal Cycle
Peter G. Connors, J.P. Myers, Carolyn S. W. Connors, and F. A. Pitelka
Notes and News
The Auk
Changes in Diet and Body Composition of Canada Geese Before Spring Migration
M. Robert Mclandress and Dennis G. Raveling
Song Variation Within a Population of White-eyed Vireos (vireo Griseus)
Richard A. Bradley
Nest Spacing, Reproductive Success, and Behavior of the Great Black-backed Gull (larus Marinus)
Ronald G. Butler and Wayne Trivelpiece
Golden-winged Warblers and Blue-winged Warblers: the Relative Success of a Habitat Specialist and a Generalist
John L. Confer and Kristine Knapp
Dabbling Duck Activity and Foraging Responses to Aquatic Macroinvertebrates
Richard M. Kaminski and Harold H. Prince
Estimation of Distance of Singing Conspecifics by the Carolina Wren
Douglas G. Richards
Extramarital and Pair Copulations in the Cattle Egret
Masahiro Fujioka and Satoshi Yamagishi
Behavior and Attendance Patterns of the Fork-tailed Storm-petrel
Theodore R. Simons
In Memoriam: George H Lowery, Jr
Thomas R. Howell and John P. O'Neill
In Memoriam: William T Keeton
Stephen T. Emlen
In Memoriam: Alfred M Bailey
Allan R. Phillips
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
A Temperate Species-rich Assemblage of Migrant Frugivorous Birds
Robert Rybczynski and Donald K. Riker
Sex-related Differences in Territorial Aggression by Ring-billed Gulls
Linda Kinkel Southern
Fertility of Albinistic Eggs of Mountain Bluebirds
Hugh L. Munro, Donita H. Munro, and Richard C. Rounds
Black Vulture Nesting, Behavior, and Growth
Laurie A. Mchargue
Discovery of the Nest and Eggs of the Cinereous Finch (piezorhina Cinerea), a Peruvian Endemic
Morris D. Williams
The Capture Efficiency of Flickers Preying on Larval Tiger Beetles
Elizabeth J. Mury Meyer
Nocturnal Activities of Brazilian Hummingbirds and Flycatchers at Artificial Illumination
Helmut Sick and Dante Martins Teixeira
Commentaries
The Museum Tradition in Ornithology--a Response to Ricklefs
Storrs L. Olson
Old Specimens and New Directions: a Comment
Mary C. Mckitrick