Contents
Fat from Black-capped Chickadees: Avian Brown Adipose Tissue
John M. Olson, William R. Dawson, and James J. Camilliere
The Use of Court Objects by Lawes Parotia
S. G. Pruett-Jones and M. A. Pruett-Jones
Extra-pair Courtship and Copulation Attempts in Northern Orioles
Bruce B. Edinger
Plasma Androgen Levels and Body Weights for Breeding and Nonbreeding Male American Kestrels
N. B. Rehder, D. M. Bird, and L. M. Sanford
Weather and Bird Populations in True Fir Forests of the Sierra Nevada, California
Sallie J. Hejl, Jared Verner, and Russell P. Balda
The Effect of Primary Production on Breeding Success and Habitat Selection in the African Hawk-eagle
K. Hustler and W. W. Howells
Responses of Five Host Species to Cowbird Parasitism
Donald S. Graham
Variation in Repertoire Presentation in Northern Mockingbirds
Kim C. Derrickson
The Gray-breasted Crake (laterallus Exilis) in Costa Rica: Vocalizations, Distribution, and Interactions with White-throated Crakes (l. Albigularis)
F. G. Stiles and D. J. Levey
Colony Attendance and Population Monitoring of Black-legged Kittiwakes on the Semidi Islands, Alaska
Scott A. Hatch and Martha A. Hatch
Parent-young Vocal Communication in Western Grebes
Gary L. Nuechterlein
Genetic Similarities Between Subspecies of the White-crowned Sparrow
Kendall W. Corbin and Patricia J. Wilkie
The Singing Behavior of Eastern Screech-owls: Seasonal Timing and Response to Playback of Conspecific Song
Gary Richison, Paul M. Cavanagh, James R. Belthoff, and Earl J. Sparks
Nest-site Preferences of Flammulated Owls in Western New Mexico
D. Archibald Mccallum
Transmitter Loads Affect the Flight Speed and Metabolism of Homing Pigeons
James A. Gessaman and Kenneth A. Nagy
Singing Organization during Aggressive Interactions among Male Yellow-rumped Caciques
Jill M. Trainer
Breeding Biology of the Great Gray Owl in Southeastern Idaho and Northwestern Wyoming
Alan B. Franklin
Dominance Relationship and Mating Behavior of Domestic Cocks-a Model to Study Mate-guarding and Sperm Competition in Birds
Kimberly M. Cheng and Jeffrey T. Burns
Book Reviews
Marcy F. Lawton
News and Notes
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Ability of Two Species of Oak Woodland Birds to Subsist on Acorns
Walter D. Koening and M. Katy Heck
Intraclutch Variation in Egg Weights of Pied-billed Grebes
M.r.l. Forbes Ankney
Distribution and Subspecies of the Dovekie in Alaska
Robert H. Day, Anthony Degange, George J. Divoky, and Declan M. Troy
The "bugs" Call of the Cliff Swallow: a Rare Food Signal in a Colonially Nesting Bird Species
Philip K. Stoddard
First Description of Hybrid Blue X Sage Grouse
Jack A. Rensel and Clayton M. White
The Relationship Between Precocity and Body Composition in Some Neonate Alcids
David C. Duncan and Anthony J. Gaston
Embryonic Vocalizations and the Removal of Foot Webs from Pipped Eggs in the American White Pelican
Roger M. Evans
Littoral Foraging by Red Phalaropes during Spring in the Northern Bering Sea
J. Christopher Kaney and E. Amy Stone
Waved Albatross Egg Neglect and Associated Mosquito Ectoparasitism
David J. Anderson and Sharon Fortner
Access to Winter Food Resources by Bright-versus Dull-colored House Finches
Mary Bomberger Brown and Charles R. Brown
Age Differences in the Fall Diet of Greater Snow Geese in Quebec
Jean-Francois Giroux and Jean Bedard
Nest-site Selection by Urban Merlins
Ian G. Warkentin and Paul C. James