General Notes
More Returns from the Guanica Forest, Puerto Rico
John Faaborg and Janice E. Winters
The in Gestion of Grit by Nestling Barn Swallows
Carl D. Barrentine
Communal Nesting in the House Sparrow
W. Bruce Mcgillivray
Chimney Swift Tries to Steal Prey from Purple Martin
Charles R. Brown
Opportunistic Scavenging by Shorebirds: Feeding Behavior and Aggression
Michael Gochfeld and Joanna Burger
Mockingbird's Defense of a Winter Food Source
Paul A. Stewart
Cover
Back Matter (PDF)
Journal of Field Ornithology
Front Matter (PDF)
Journal of Field Ornithology
Contentss
An Evaluation of Patagial Markers for Cathartid Vultures
Michael P. Wallace, Patricia G. Parker, and Stanley A. Temple
Effect of Nuclear Power Plant Lights on Migrants
J. Ellen Marsden, Timothy C. Williams, Victor Krauthamer, and Helene Krauthamer
Daily Activity Patterns of Breeding Ring-billed and California Gulls
Michael R. Conover and Don E. Miller
Breeding Biology of Laughing Gulls in Florida. Part Ii: Nestling Parameters
Elizabeth Anne Schreiber and Ralph W. Schreiber
Age and Sex Differences in the Size of Northern Harriers
Keith L. Bildstein and Frances Hamerstrom
Parasitism of Canvasback Nests by Redheads
Lawson G. Sugden
Fixation of Wintering Palm Warblers to a Specific Site
Paul A. Stewart and Harold A. Connor
Recent Literature
Journal of Field Ornithology
Notes and News
Journal of Field Ornithology
Index to Volume 51
Journal of Field Ornithology