Contents
The Avian Egg: Mass and Strength
Amos Ar, Hermann Rahn, and Charles V. Paganelli
Multi-species Territoriality in Neotropical Foraging Flocks
Charles A. Munn and John W. Terborgh
Recent Publications
The Condor
Nest Sites and Population Demographies of White-breasted and Pigmy Nuthatches in Colorado
Shuan M. Mcellin
Occurrence and Feeding Ecology of the Common Flicker on Grand Cayman Island
Alexander Cruz and David W. Johnston
Feeding Ecology and Prey Selection in the White Ibis
James A. Kushlan
Seabirds and Fishing Vessels: Co-occurrence and Attraction
Terence R. Wahl and Dennis Heinemann
Breeding and Feeding Ecology of the Galapagos Dove
P. R. Grant and K. Thalia Grant
Natural History of the Guam Rail
J. Mark Jenkins
Vocalizations of the Rufous-backed Thrush (turdus Rufopalliatus) in Guerrero, Mexico
Gary L. Grabowski
News and Notes
The Condor
The Bulletin Board
The Condor
Index to Volume 81
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Notes on the Vocalizations of the Mexican Chickadee
Keith L. Dixon and Dennis J. Martin
Incidence of Distress Calls in Mist-netted Birds
Michael Perrone Jr. and Dennis R. Paulson
Behavioral Implications of the Defense of a Shoveler Brood by Common Eiders
Patrick J. Weatherhead
Physical Deformities in a Population of Wintering Blackbirds
Marjorie S. Sharp and Robert L. Neil
The Uropygial Gland of the Sooty Tern
David W. Johnston
Ring-billed Gulls Feeding on Date Fruits
Gilbert S. Grant
Oyster Predation by the Black Oystercatcher in British Columbia
Robert W. Butler and John W. Kirbyson
Nest Site Selection in Eastern Bluebirds
Benedict C. Pinkowski
Choice of Host Nest by the Brown-headed Cowbird in Colorado and Wyoming
Lasdislav R. Hanka
First Nesting Record of Gray-hooded Gull from Ecuador
Robert S. Ridgley and David S. Wilcove