Contents
Temporal Synergism of Corticosterone and Prolactin in Regulating Orientation in the Migratory White-throated Sparrow (zonotrichia Albicollis)
Donn D. Martin and Albert H. Meier
Seasonal Social Organization and Movements of Spruce Grouse
Laurence N. Ellison
The Molt of the European Whitethroat
S. L. Pimm
Food Niche Overlap of Two Iowa Marsh Icterids
David K. Voigts
The Spring Migration Pattern at Fortine, Montana
Winton Weydemeyer
Individual Laying Histories and the Clutch Size and Numbers of Eggs of Parasitic Cuckoos
Robert B. Payne
Energy Intake by Hydropenic Chipping Sparrows (spizella Passerina Passerina) Maintained on Different Diets
Ralph R. Moldenhauer and Patricia G. Taylor
Selected Aspects of Burrowing Owl Ecology and Behavior
Dennis J. Martin
News and Notes
The Condor
Publications Received
The Condor
The Bulletin Board
The Condor
Index to Volume 75
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Discovery of a Kittlitz's Murrelet Nest
Edgar P. Bailey
Polygyny in the Dipper
Frank E. Price and Carl E. Bock
Dde Residues in the Endangered Hawaiian Dark-rumped Petrel (pterodroma Phaeopygia Sandwichensis)
Warren B. King and Jeffrey L. Lincer
Experimental Study of Feeding Rates of Nesting Cooper's Hawks
Noel F. Snyder and Helen A. Snyder
Recent Nesting of the Rhinoceros Auklet in California
Timothy O. Osborne
Remote Sensing of Body Temperature in a Captive 25-g Bird
Edward Earle Southwick
Behavior and Activity Cycles of Gambel's Quail and Raptorial Birds at a Sonoran Desert Waterhole
Benjamin B. Beck, Christopher W. Engen, and Peter W. Gelfand
The Cayenne Tern in Brazil
Rodolfo Escalante
Blood Respiratory Properties in Some Antarctic Birds
William K. Milsom, Kjell Johansen, and Ronald W. Millard
Observations on New or Unusual Birds from Trinidad, West Indies, and Comments on the Genus Plegadis in Venezuela
Michael Gochfeld
Cattle Egrets in Norther Mexico
Dale A. Zimmerman
Some Factors Affecting Foraging Behavior of Plain Titmice
Steven Davis, Betty S. Davis, and John Davis
Clutch Size, Hatching Success, and Eggshell-thinning in Western Gulls
George L. Hunt Jr. and Molly W. Hunt