Contents
Cercomacra Manu, a New Species of Antbird from Southwestern Amazonia
John W. Fitzpatrick and David E. Willard
Remex Growth and Body Mass of Mallards during Wing Molt
Marek Panek and Przemyslaw Majewski
Sexual Size Dimorphism and Parental Care Patterns in a Monomorphic and a Dimorphic Larid
James S. Quinn
Extrapair Fertilizations and the Evolution of Colonial Breeding in Purple Martins
Eugene S. Morton, Lisa Forman, and Michael Braun
Cloacal Protuberance and Copulatory Behavior of the Alpine Accentor (prunella Collaris)
Masahiko Nakamura
100 Years Ago in the Auk
The Auk
Some Problems and Approaches in Avian Mate Choice
Kristine Johnson and John M. Marzluff
Comparative Population Biology of Four Prions (genus Pachyptila) from the Indian Ocean and Consequences for Their Taxonomic Status
V. Bretagnolle, R. Zotier, and P. Jouventin
Notes and News
The Auk
Breeding, Morphology, and Growth of the Endangered Dark-rumped Petrel
Felipe Cruz and Justine B. Cruz
Alternative Foods of a Diet Specialist, the Snail Kite
Steven R. Beissinger
Promiscuity in the Cattle Egret (bubulcus Ibis)
N. G. Mckilligan
Effects of Human Disturbance on Breeding Least and Crested Auklets at St Lawrence Island, Alaska
John F. Piatt, Bay D. Roberts, Wayne W. Lidster, John L. Wells, and Scott A. Hatch
Density Effects on Asynchronous Hatching and Brood Reduction in European Starlings
Philip C. Stouffer and Harry W. Power
Competition Between European Starlings and Native Woodpeckers for Nest Cavities in Saguaros
Theodore A. Kerpez and Norman S. Smith
Intake Rates and the Timing of Crossbill Reproduction
Craig W. Benkman
Immediate Impact of the 'exxon Valdez' Oil Spill on Marine Birds
John F. Piatt, Calvin J. Lensink, William Butler, Marshal Kendziorek, and David R. Nysewander
In Memoriam: Alfred E Eynon, 1918-1988
Joseph J. Hickey
In Memoriam: Willetta Lueshen, 1914-1989
C. Stuart Houston
Covers
Front Matter
The Auk
Back Matter
The Auk
Short Communications
Carbon Isotope Ratio of Feathers Reveals Feeding Behavior of Cormorants
Hiroshi Mizutani, Michio Fukuda, Yuko Kabaya, and Eitaro Wada
A Comparison of Radar Observations of Bird Migration at Haizhou Bay, China, and Guam, Marianas
Timothy C. Williams and Mao Ying
Renesting by American Woodcocks (scolopax Minor) in Maine
Daniel G. Mcauley, Jerry R. Longcore, and Greg F. Sepik
Egg Size and Parental Quality Influence Nestling Growth in the Shag
Trond Amundsen and Jogeir N. Stokland
Molt-breeding Overlap in Northern Mockingbirds
Julia Zaias and Randall Breitwisch
Temporal and Geographic Homogeneity of Gene Frequencies in the Fox Sparrow (passerella Iliaca)
Kevin J. Burns and Robert M. Zink
Habitat Choice in Captive Arctic Warblers
Kristen C. Patten and Trevor Price
Commentaries
A Note on Statistical Power
L. Scott Forbes
Body Size and Fecundity in Lesser Snow Geese
Ray T. Alisauskas and C. Davison Ankney
Response to Alisauskas and Ankney
Fred Cooke, J. Chris Davies, and R. F. Rockwell
Do Point Counting and Spot Mapping Produce Equivalent Estimates of Bird Densities?
Ludwik Tomialojc and Jared Verner
Response to Tomialojc and Verner
Paul B. Hamel