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The Condor, Volume 81, Number 2 (1979)



Reproductive Commitment and Success of Cassin's Auklet. 111-121.
David A. Manuwal.
Recent Publications. 121-202.
Competition Among Bark-Foraging Birds in Central Illinois: Experimental Evidence. 122-132.
Joseph B. Williams, George O. Batzli.
Egg Weights and Brood Reduction in the European Swift (Apus Apus). 133-145.
Raymond J. O'Connor.
Selective Correlation of Egg Size with Chick Mortality in the Black-Headed Gull (Larus Ridibundus). 146-156.
Carl Anders Lundberg, Risto A. Vaisanen.
Egg Neglect in the Procellariiformes: Reproductive Adaptations in the Fork-Tailed Storm-Petrel. 157-165.
P. Dee Boersma, Nathaniel T. Wheelwright.
Recent Publications. 165.
Recent Changes in California Condor Eggshells. 166-172.
Lloyd F. Kiff, David B. Peakall, Sanford R. Wilbur.
Songs of the Fox Sparrow. II. Intra- and Interpopulation Variation. 173-184.
Dennis J. Martin.
Sound Spectrographic Analysis: Suggestions for Facilitating Auditory Imagery. 185-192.
Joan Hall-Craggs.
Body Weights of Birds: A Review. 193-202.
George A. Clark, Jr.
The Evolutionary Re-Establishment of a Lost Ancestral Muscle in the Bowerbird Assemblage. 203-206.
Robert J. Raikow, Stephen R. Borecky.
The Bulletin Board. 221.
News and Notes. 222-223.

Short Communications

Fruit-Eating Behavior of Swallow-Tailed Kites (Elanoides Forficatus) in Colombia. 207-208.
Thomas O. Lemke.
Nest and Eggs of the White-Browned Tapaculo (Scytalopus Superciliaris). 208.
Edmund W. Stiles.
Eggshell Thickness Changes in Pacific Ocean Phaethontidae and Sulidae. 209.
Michael L. Morrison.
Effect of Nesting History on Egg Size in Eastern Bluebirds. 210.
Benedict C. Pinkowski.
Behavioral Flexibility of Pine Siskins in Mixed Species Foraging Groups. 211-212.
David F. Balph, Martha Hatch Balph.
Diet of the Snowy Owl in the Absence of Small Mammals. 213-214.
Pamela L. Williams, Laurence G. Frank.
Nesting Behavior of Female White-Tailed Ptarmigan in Colorado. 215-217.
Kenneth M. Giesen, Clait E. Braun.
Renesting of White-Tailed Ptarmigan in Colorado. 217-218.
Kenneth M. Giesen, Clait E. Braun.
Golden Eagle Nest on Kodiak Island, Alaska. 218.
Vernon D. Berns.
First Record of a Blackpoll Warbler for the Galapagos. 218-219.
Peter T. Boag, Laurene M. Ratcliffe.
A Second Breeding Record for the Grey-Hooded Gull (Larus Cirrocephalus) on the Coast of Peru. 219.
David C. Duffy, Natasha Atkins.
A Seven-Egg Clutch for the Cooper's Hawk. 219-220.
David H. Ellis, Greg Depner.
Suggestions for Preparing Audiospectrograms for Publication. 220-221.
William L. Thompson.
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