Contents
A Method for Separating Juvenal and First-winter Ring-billed Gulls (larus Delawarensis) and Common Gulls (larus Canus)
Anthony J. Lauro and Barbara J. Spencer
Discovery of the Home of the Indigo Macaw in Brazil
Helmut Sick and Dante Martins Teixeira
Fourth in Fuertes Print Series
Frank M. Chapman
Pelagic Birds of the Northern Gulf of Mexico
Charles D. Duncan and Ralph W. Havard
The Changing Seasons
Paul Debenedictis
The Autumn Migration August 1 - November 30, 1979
North American Birds
Status of the Piping Plover on the East Coast of North America
Winifred E. Cairns and Ian A. Mclaren
Survey of Interior Least Tern Nesting Populations
Robert L. Downing
First Record of Snowy-crowned Tern (sterna Trudeaui) for Peru
Paul K. Donahue and Wayne R. Petersen
First Sightings of the Ruff in Peru
Frank Oatman, Manuel A. Plenge, and David Simon
Communications
North American Birds
Announcements
North American Birds
The Last Word
North American Birds
Cover
Front Matter (PDF)
North American Birds