Shawn M. Billerman

Irby J. Lovette

Cornell University

David W. Winkler

Kantonsspital Baselland

David W. Winkler

Cornell University

Guy M. Kirwan

Field Museum of Natural History

Peter F. D. Boesman

Ithaca College

Nigel Collar

BirdLife international

R. Terry Chesser

National Museum of Natural History

Péter Clement

University of Portland

Pamela C. Rasmussen

Michigan State University

Carla Cicero

Museum of Vertebrate Zoology

Cornell University

Cornell Lab of Ornithology

University of Colorado Boulder

H.B. Fuller (United States)

University of Exeter

Museum of Vertebrate Zoology

University of California, Berkeley

University of British Columbia

Houston Museum of Natural Science

Louisiana State University