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The Condor, Volume 86, Number 4 (1984)

Publication Information


Cultural and Genetic Differentiation of Two Subspecies of White-Crowned Sparrow. 359-367.
Myron Charles Baker, Michael A. Cunningham, Andrew D. Thompsen, Jr.
Sexual Dimorphism in Continental Steamer-Ducks. 368-377.
Bradley C. Livezey, Philip S. Humphrey.
A Peregrine Falcon Polymorph: Observations of the Reproductive Behavior of Falco kreyenborgi. 378-382.
John W. McNutt.
Lead Concentrations and Reproduction in Highway-Nesting Barn Swallows. 383-389.
Christian E. Grue, Thomas J. O'Shea, David J. Hoffman.
Osmoregulation in Nestling Glaucous-Winged Gulls. 390-395.
Maryanne R. Hughes.
Recent Publications. 395-503.
Proper Expression of Metabolizable Energy in Avian Energetics. 396-400.
Michael R. Miller, Kenneth J. Reinecke.
Breeding Season Time Budgets of the Southern Black-Backed Gull in Antarctica. 401-409.
Stephen J. Maxson, Neil P. Bernstein.
Prey Handling Relationships in Captive Ovenbirds. 410-415.
Cynthia A. Paszkowski, Timothy C. Moermond.
Karyotypic Uniformity in the Red-Winged Blackbird. 416-422.
James Cox, Frances C. James.
Growth and Sexual Dimorphism of the Boat-Tailed Grackle. 423-432.
G. Thomas Bancroft.
Vocalizations of the Purple Martin. 433-442.
Charles R. Brown.
Altitudinal Variations in Nests of the Hawaiian Honey Creeper Hemignathus Virens Virens. 443-454.
Michael D. Kern, Charles Van Riper III.
Racial Differences in Nests of White-Crowned Sparrows. 455-466.
Michael D. Kern.
Frequency, Spatial Distribution and Nest Attendants of Supernormal Clutches in Ring-Billed and California Gulls. 467- 471.
Michael R. Conover.
Experimental Evidence That Female-Female Pairs in Gulls Result From a Shortage of Breeding Males. 472-476.
Michael R. Conover, George L. Hunt, Jr.
Impact of Winter Stress on Mallard Body Composition. 477-482.
Richard J. Whyte, Eric G. Bolen.
Commentary: Patterns in Roosting Flocks: A Re-Evaluation of Data and Conclusions. 497-499.
News and Notes. 501.
Statement of Ownership, Management and Circulation. 501.
Treasurer's Report. 502-503.
Index to Volume 86. 507-517.

Short Communications

Damaged Western Flycatcher Eggs in Nests Containing Brown-Headed Cowbird Chicks. 483-485.
Patricia M. Dolan, Philip L. Wright.
Observations on Female Promiscuity in the Red-Shouldered Hawk. 486.
Michael D. Mccrary, Peter H. Bloom.
A Record of Tree-Nesting Prairie Falcons in Wyoming. 487-488.
Patricia A. Maclaren, Douglas E. Runde, Stanley H. Anderson.
Agonistic "Whirling" By Zone-Tailed Hawks. 488.
William S. Clark.
Male-Dominated Incubation in Ospreys. 489.
Karl E. Grover.
Variation in the Weight and Composition of Mute Swan (Cygnus Olor) Eggs. 489-490.
Mike Birkhead.
Mid-Winter Lipid Reserves of the Golden-Crowned Kinglet. 491-492.
Charles R. Blem, John F. Pagels.
White-Faced Ibis Nesting in the Southern San Joaquin Valley of California. 492-493.
Gary L. Ivey, Daniel J. Severson.
An Archaeological Record for the White-Faced Whistling-Duck (Dendrocygna Viduata) in Central Panama. 493-494.
Richard G. Cooke, Storrs L. Olson.
Defense of Nest Boxes By Western Bluebirds During the Post-Breeding Period. 494-495.
Jeffrey D. Brawn.
An Alternative Origin of Supernormal Clutches in Caspian Terns. 496.
Stephen T. Penland.
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