Contents
Song Groups in a Singing Assembly of Little Hermits
R. Haven Wiley
Foraging for Insects by a Tropical Hummingbird
Allen M. Young
Vertical Stratification of Birds in a Tropical Dry Forest
David L. Pearson
Responses of Male White-crowned Sparrows to Playback of Recorded Songs
Jared Verner and Marilyn M. Milligan
The Time and Energy Budget of the Male Dickcissel(spiza Americana)
R. Leigh Schartz and John L. Zimmerman
Correlation of Age, Size of Territory, Plumage, and Breeding Success in White-crowned Sparrows
C. John Ralph and Carol A. Pearson
Behavior and Nesting Success Relative to Nest Location in Adelie Penguins (pygoscelis Adeliae)
Richard Tenaza
Latitudinal Differences in the Breeding and Molt Schedules of Alaskan Red-backed Sandpipers (calidris Alpina)
Richard T. Holmes
Migration of Banded Yellow-headed Blackbirds
W. C. Royall Jr., J. W. Grazio, J. L. Guarino, and A. Gammell
News and Notes
The Condor
Publications Received
The Condor
The Bulletin Board
The Condor
Covers
Back Matter (PDF)
The Condor
Front Matter (PDF)
The Condor
Short Communications
Some Fringillid Records for Texas
Warren M. Pulich
Hummingbirds Feeding on Sand
Nicolaas A. Verbeek
Unusual Predatory Activities of Mexican Jays and Brown-headed Cowbirds under Conditions of Deep Snow in Southeastern Arizona
Vincent D. Roth
Roosting Habits of White-breasted Nuthatches
Lawrence Kilham
The Common Crow, Corvus Brachyrhynchos, in the Great Basin
Gerald L. Richards
Social Relationships among Mountain Chickadees (parus Gambeli)
Michael E. Minock
Preservation of Maui's Endangered Forest Birds
Winston Banko
Plumage Color and Energetics
Sheldon Lustick
Imperfect Albinism in a Redtailed Tropicbird
Roger B. Clapp and Lawrence N. Huber