Contents
Winter Wren Singing Behavior: a Pinnacle of Song Complexity
Donald E. Kroodsma
Migration in a Local Population of Spruce Grouse
Patrick W. Hersog and Daniel M. Keppie
Diets of Pygoscelid Penguins at King George Island, Antarctica
Nicholas J. Volkman, Piotr Presler, and Wayne Trivelpiece
The Birds of Finca Merenberg, Huila Department, Colombia
Robert S. Ridgely and Steven J. Gaulin
Breeding Biology of Curve-billed Thrashers and Long-billed Thrashers in Southern Texas
David H. Fischer
Age-specific Changes in the Major Body Components and Caloric Values of Herring Gull Chicks
Erica H. Dunn and I. Lehr Brisbin Jr.
Ontogeny of Oxygen Consumption by Embryos of Two Species of Swallows (hirundinidae)
Geoffrey F. Birchard and Delbert L. Kilgore Jr.
Sex-specific Differences in Winter Distribution Patterns of Canvasbacks
James D. Nichols and G. Michael Haramis
The Young Cowbird: Average or Optimal Nestling?
David Eastzer, Penn Richard Chu, and Andrew P. King
Diversity and Abundance of Spring Migratory Birds Using Habitat Islands on the Great Plains
Thomas E. Martin
Social Interactions in the Santa Cruz Island Scrub Jay
Jonathan L. Atwood
Intra-island Variation in the 'elepaio on the Island of Hawai'i
H. Douglas Pratt
Head-down or "preening Invitation" Displays Involving Juvenile Brown-headed Cowbirds
Peter E. Lowther and Stephen I. Rothstein
Commentary
The Condor
The Bulletin Board
The Condor
News and Notes
The Condor
Index to Volume 82
The Condor
Cover
Front Matter (PDF)
The Condor
Short Communications
Observations of the Behavior of the Zigzag Heron
William E. Davis Jr., Paul K. Donahue, and Eleanor G. Perkins
Development of Temperature Regulation in Nestling Tree Swallows
Richard L. Marsh
A Nesting Hummingbird Feeding Solely on Arthropods
Robert D. Montgomerie and Catherine A. Redsell
Foods of Breeding Tricolored Blackbirds in Agricultural Areas of Merced County, California
Joseph P. Skorupa, Roger L. Hothem, and Richard W. Dehaven
Limber Pine Seed Harvest by Clark's Nutcracker in the Sierra Nevada: Timing and Foraging Behavior
Diana F. Tomback and Kathryn A. Kramer
Rictal Bristle Function in Willow Flycatcher
Michael R. Conover and Don E. Miller
First Record of the Common Cuckoo from Mainland North America
Robert Gill Jr. and Colleen M. Handel
Crested Auklet Found in California
Fred O. Weyman
Changes in the Proportion of Bridled Murres in Northern Labrador
T. R. Birkhead and A. R. Lock