THE AMERICAN ORNITHOLOGISTS’ UNION 
JOHN T. EMLEN, President 
Department of Zoology 
University of Wisconsin 
Madison, Wisconsin 53706 
FOUNDED SEPTEMBER 28, 1883 
OFFICIAL PUBLICATIONS 
OLIVER L. AUSTIN, Jr., Editor of The Auk’ 
The Florida State Museum 
University of Florida 
Gainesville, Florida 32601 
WESLEY E. LANYON, First Vice-President 
American Museum of Natural History 
Central Park West at 79th Street 
New York, New York 10024 
The Auk 
ORNITHOLOGICAL MONOGRAPHS 
GEORGE E. WATSON, Secretary 
National Museum of Natural History 
Smithsonian Institution 
Washington, D.C. 20560 
KENNETH C. PARKES, Second Vice-President 
Carnegie Museum of Natural History 
Pittsburgh, Pennsylvania 15213 
ALEXANDER WETMORE, Honorary President 
National Museum of Natural History 
Smithsonian Institution 
Washington, D.C. 20560 
JOHN A. WIENS, Treasurer 
Department of Zoology 
Oregon State University 
Corvallis, Oregon 97331 
