Contents
Photographic Censusing of the 1982-1983 California Condor Population
Noel F. R. Snyder and Eric V. Johnson
Recent Publications
The Condor
Reproduction of Ferruginous Hawks Exposed to Controlled Disturbance
Clayton M. White and Thomas L. Thurow
Protein Reserve Dynamics in Postbreeding Adult Male Redheads
Robert O. Bailey
Time and Energy Constraints on Courtship in Wintering American Black Ducks
Lynn M. Brodsky and Patrick J. Weatherhead
Reproduction in Zebra Finches: Hormone Levels and Effect of Dehydration
Carol M. Vleck and J. Priedkalns
A Comparison of Transects and Point Counts in Oak-pine Woodlands of California
Jared Verner and Lyman V. Ritter
Reliability of Singing Bird Surveys: Effects of Song Phenology during the Breeding Season
David M. Wilson and Jonathan Bart
Mate Retention in Caspian Terns
Francesca J. Cuthbert
Eggshells of Arctic Terns from Finland: Effects of Incubation and Geography
M. Finnlund, R. Hissa, J. Koivusaari, E. Merila, and I. Nuuja
Aggressive Behavior and Interspecific Killing by Flying Steamer-ducks in Argentina
Gary L. Nuechterlein and Robert W. Storer
Experiments on Olfactory Detection of Food Caches by Black-billed Magpies
Deborah Buttron and Gary L. Nuechterlein
Influence of High Density and Parental Age on the Habitat Selection and Reproduction of Black-billed Magpies
Kerry P. Reese and John A. Kadlec
Influence of Parental Age and Season on Savannah Sparrow Reproductive Success
Jean Bedard and Gisele Lapointe
Winter Mortality in Common Barn-owls and Its Effect on Population Density and Reproduction
Carl D. Marti and Phillip W. Wagner
Habitat Use by Clapper Rails in the Lower Colorado River Valley
Bertin W. Anderson and Robert D. Ohmart
Song Dialects of White-crowned Sparrows: Historical Processes Inferred from Patterns of Geographic Variation
Myron Charles Baker and Daniel B. Thompson
News and Notes
The Condor
The Bulletin Board
The Condor
Information for Contributors
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Life History Studies of the Lesser Snow Goose V: Temporial Effects on Age-specific Fecundity
Robert F. Rockwell, C. Scott Findlay, and Fred Cooke
Observations of Scrub Jays Cleaning Ectoparasites from Black-tailed Deer
Frank R. Isenhart and David F. Desante
A Mutualistic Feeding Association Between Boat-tailed Grackles and Pied-billed Grebes
Jerome A. Jackson
Re-evaluation of the "hybrid" Hummingbird Cynanthus Sordidus X C. Latirostris from Mexico
Laurence C. Binford
Apparent Double Blastoderms in Adelie Penguin Eggs
Lee B. Astheimer and C. R. Grau
Vegetation and Soils of Burrowing Owl Nest Sites in Conata Basin, South Dakota
James G. MacCracken, Daniel W. Uresk, and Richard M. Hansen
Territoriality and Interspecific Aggression in Steamer-ducks
Bradley C. Livezey and Philip S. Humphrey