Contents
Habitat and Resource Relationships in Acorn Woodpeckers
Robert C. Roberts
Recent Publications
The Condor
Comparative Population Bioenergetics of Three Insectivorous Passerines in a Deciduous Forest
Richard T. Holmes, Craig Patrick Black, and Thomas W. Sherry
Patterns of Alpha-diversity and Abundance in Breeding Bird Communities across North America
Jeffrey J. Short
Adaptive Significance of the Variable Dispersion Pattern of Breeding Northern Orioles
Barbara Yohai Pleasants
Laying Dates, Clutch Size and Egg Weight of Captive Mallards
Bruce D. Batt and Harold H. Prince
Wing Molt and Weights of Barnacle Geese in Spitsbergen
Myrfyn Owen and M. A. Ogilvie
Observations on Distribution, Diet, and Breeding of the Hawaiian Thrush
Charles Van Riper III and J. Michael Scott
Fecal Sac Ingestion in the Mountain White-crowned Sparrow
Martin L. Morton
Probable Non-breeders among Female Blue Grouse
Susan J. Hannon and Fred C. Zwickel
The Bulletin Board
The Condor
News and Notes
The Condor
Ornithology in the People's Republic of China (prc)
Robert J. Grimm
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
"leader-follower" Singing in Red-winged Blackbirds
Douglas G. Smith and Douglas O. Norman
On the Function of Prey Beating by Roadrunners
Kathleen G. Beal and Linda D. Gillam
The Source of the Dive-noise of the Anna's Hummingbird
Luis F. Baptista and Margaret Matsui
Metabolic Rate in Five Tropical Bird Species
Carol M. Vleck and David Vleck
Experimental Evidence for Facilitation of Pair Formation by Bright Color in Weaverbirds
E. C. Collias, N. E. Collias, C. H. Jacobs, F. Mcalary, and J. T. Fujimoto
The Association of Marine Birds and Feeding Gray Whales
Craig S. Harrison
Additional Records of White-winged Doves in Colorado
Clait E. Braun, Vincent H. Reid, Tom D. Ray, and Roger L. Boyd
Multiple Nesting Attempts by Alaskan Redpolls
Declan M. Troy and Gerald F. Shields
Status of Some Birds on Isla San Andres and Isla Providencia, Colombia
Stephen M. Russell, Jon C. Barlow, and Donald W. Lamm
Snake and Pond Snails as Food of Grey-necked Wood-rails
Lawrence Kilham
A Nest of the Collared Gnatwren (microbates Collaris)
Yoshika Oniki and Edwin O. Willis