Elize Y. X. Ng
National University of Singapore, Department of Biological Sciences, 14 Science Drive 4, Singapore 117543, phone: +65-6516-2853
Singapore

Arya Y. Yue
Department of Biological Sciences, Bryn Mawr College, 101 N Merion Ave, Bryn Mawr, PA 19010, United States of America

James A. Eaton
Casa Indah 1, Persiaran Surian, Petaling Jaya, 47810, Malaysia

Chyi Yin Gwee
Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, 117558 Singapore

Bas van Balen
Basilornis Consults, Muntendampad 15, 6835 BE Arnhem, Netherlands

Frank E. Rheindt
Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, 117558 Singapore