Contents
Proceedings of the Seventy-Second Annual Meeting
John L. Zimmerman
Index to Volume 103, 1991
Kathleen G. Beal
Covers
Back Matter (PDF)
Wilson Bulletin
Front Matter (PDF)
Wilson Bulletin
Major Papers
Notes on the Behavior and Ecology of the Red-Cotingas (Cotingidae: Phoenicircus)
Pepper W. Trail and Paul Donahue
Repeatability of Clutch Size in House Wrens
E. Dale Kennedy and Douglas W. White
Sibling Species of Greenlets (Vireonidae) in Southern Brazil
Edwin O. Willis
Comparison of Nesting Habitat of Coexisting Sharp-Shinned and Cooper's Hawks in Missouri
Ernie P. Wiggers and Kevin J. Kritz
Time Budgets and the Adaptiveness of Polyandry in Northern Jacanas
Burr J. Betts and Donald A. Jenni
Time-Activity Budget of Wilson's and Semipalmated Plovers in a Tropical Environment
Alain Morrier and Raymond McNeil
Migration and Mass Change of White-Rumped Sandpipers in North and South America
B. A. Harrington, F. J. Leeuwenberg, S. Lara Resende, R. McNeil, B. T. Thomas, and J. S. Grear
Seasonality, Habitat Use, and Flock Sizes of Shorebirds at the Bahia De Asuncion, Paraguay
Floyd E. Hayes and Jennifer A. Fox
Specimens and Probable Breeding Activity of the Band-Rumped Storm-Petrel on Hawaii
Winston E. Banko, Paul C. Banko, and Reginald E. David
Short Communications
Copulatory and Other Pre-Incubation Behaviors of Cooper's Hawks
Robert N. Rosenfield, John Bielefeldt, and John Cary
The Voice and First Nesting Records of the Zigzag Heron in Ecuador
Peter English and Cynthia Bodenhorst
Enhanced Fledging Success by Colonially Nesting Ospreys in Nova Scotia Coastal Habitat
Stephen P. Flemming, Robert P. Bancroft, and Norman R. Seymour
The Avifauna of the Revillagigedo Islands, Mexico: Additional Data and Observations
Luis Santella and Andres M. Sada
Effects of Leafing and Position on Nest Predation in a Mediterranean Fragmented Forest
T. Santos and J. L. Telleria
Pairbond Formation in the Razorbill
Richard H. Wagner
Discovery of the Masked Saltator in Colombia, with Notes on Its Ecology and Behavior
Luis Miguel Renjifo
Fruit Harvesting by American Robins: Influence of Fruit Size
Douglas W. White and Edmund W. Stiles
Conspecific Aggression in a Wood Stork Colony in Georgia
A. Lawrence Bryan Jr. and Malcolm C. Coulter
Foraging Behavior of a Guild of Neotropical Vultures
William C. Lemon
Ovarian Follicles Do Not Reveal Laying Histories of Post-Incubation Wood Ducks
Brad Semel and Paul Sherman
A Note on the Vocalizations of the Chinese Nuthatch
Erik Matthysen, Sandra L. L. Gaunt, and D. Archibald McCallum
Bird/Ant/Acacia Symbioses in a Mature Neotropical Forest
James D. Gilardi and Kirsten Von Kugelgen
Vocal Responsiveness to Chilling in Embryonic and Neonatal American Coots
Shawn C. Bugden and Roger M. Evans
Successful Exchange of Prairie-Chicken Eggs Between Nests in Two Remnant Populations
Ronald L. Westemeier, Scott A. Simpson, and David A. Cooper
Occurrence of the Andean Condor in the Perija Mountains of Venezuela
Rosanna Calchi and Angel L. Viloria
Distribution and Population Status of Harlequin Ducks in Idaho
E. Frances Cassirer, Craig R. Groves, and Richard L. Wallen
House Sparrows Open an Automatic Door
Randall Breitwisch and Margaret Breitwisch