Contents
Grallaricula Ochraceifrons, a New Species of Antpitta from Northern Peru
Gary R. Graves, John P. O'Neill, and Theodore A. Parker III
Cowbird Parasitism of Dickcissels in Different Habitats and at Different Nest Densities
John L. Zimmerman
Effects of Investigator Activity on Ring-billed Gull Behavior and Reproductive Performance
Peter M. Fetterolf
Displays and Vocalizations of the Sora and the Virginia Rail
Gerald W. Kaufmann
A Comparison of Avian Foraging Behavior in Unlogged and Logged Mixed-coniferous Forest
Kathleen E. Franzreb
Habitat Associations of Breeding Birds in Cottage and Natural Areas of Central Ontario
Karen Clark, David Euler, and Edward Armstrong
The Plain-fronted Thornbird: Nest Construction, Material Choice, and Nest Defense Behavior
Betsy Trent Thomas
Ornithological Literature
Wilson Bulletin
Covers
Back Matter (PDF)
Wilson Bulletin
Front Matter (PDF)
Wilson Bulletin
General Notes
Pair Formation Behavior of the Galapagos Lava Heron
James A. Kushlan
Pre-migratory Behavior of Common Loons on the Autumn Staging Grounds
Judith W. Mcintyre and Jack F. Barr
Loon Migrations Off the Coast of the Northeastern United States
Kevin D. Powers and Jeffrey Cherry
Vocal Learning in the Parulinae
W. Roger Meservey, Donald E. Kroodsma, and Roberta Pickert
Factors Affecting the Performance of Flight Songs and Perch Songs in the Common Yellowthroat
Michael P. Kowalski
Vocalizations and Behavior of Violet-green Swallows in the Chiricahua Mountains, Arizona
Charles R. Brown
Female Tree Swallow Lays Three Clutches during One Breeding Season
Michael P. Lombardo
Infanticide by a Purple Martin
Robert W. Loftin and Don Roberson
Overlap of Two Broods of Eastern Bluebirds in the Same Nest and Brood Reduction
Patricia Adair Gowaty
Annual Adult Survival Rates for Brown-headed Cowbirds Wintering in Southeast Texas
Keith A. Arnold and Dan M. Johnson
Flocking Pattern of Foraging American Crows in Oklahoma
Fritz L. Knopf and Barbara A. Knopf
An Additional Method of Foraging in Litter by Species of Turdus Thrushes
George A. Clark Jr.
Northern Mockingbird Kills Cedar Waxwing
L. D. Hedrick and A. D. Woody
Head-scratching Method of Galapagos Finches Unaffected by Variation in Cranial Morphology
Edward H. Burtt Jr.
Hermit Thrush Nesting on a Rock Face
Edward R. Armstrong and David L. Euler