Contents
Diving by Shearwaters
R. G. B. Brown, W. R. P. Bourne, and Terence R. Wahl
The Evolution of Mating Systems in Grouse
James F. Wittenberger
Reproductive Habits in the Snow Goose: the Influence of Female Age
George Finney and Fred Cooke
Pair-formation Displays of the Great Egret
Douglas W. Mock
Passerine Subadult Plumages and the Deceptive Acquisition of Resources: Test of a Critical Assumption
Sievert Rohwer
Breeding Ecology of House Sparrows: Spatial Variation
Edward C. Murphy
Vocalizations of the Whimbrel on Its Breeding Grounds
Margaret A. Skeel
Vocalizations of Cassin's Finch in Northern Utah
Fred B. Samson
Coloniality in Terns: the Role of Social Feeding
R. Michael Erwin
Effects of Photoperiod and Temperature on Postnuptial Molt in Captive White-crowned Sparrows
John D. Chilgren
Differences in the Composition of Venous and Cardiac Blood from White-crowned Sparrows
Michael D. Kern and William A. De Graw
Recent Publications
The Condor
News and Notes
The Condor
Cooper Ornithological Society
The Condor
The Bulletin Board
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Fishing Vessel Endangered by Crested Auklet Landings
Matthew H. Dick and William Donaldson
Ravens Attracted to Wolf Howling
Fred H. Harrington
Song Variation in Dark-eyed Juncos in Nova Scotia
Laidlaw Williams and Michael H. Macroberts
Ruffed Grouse Use of Supraorbital Combs in Displays
Stephen J. Maxson
Weights of Colorado Sage Grouse
Thomas D. I. Beck and Clait E. Braun
Body Temperature and Heart Rate of the Snowy Owl
James A. Gressaman
Seasonal Variation of Femur and Tibiotarsus Constituents in Canada Geese
Dennis G. Raveling, Mamduh Sifri, and Robert B. Knudsen
Tonic Immobility Responses of Herring Gull Chicks
William Montevecchi
Predation on Hummingbird by Oropendola
Gary R. Graves