1. Department of Wildlife Faculty of Forest Resource and Environment Management, Vietnam National University of Forestry Hanoi Vietnam
2. Department of Fish, Wildlife, and Conservation Biology Warner College of Natural Resources, Colorado State University Fort Collins Colorado USA
3. Institute for Tropical biodiversity and Forestry Hanoi Vietnam
4. Cornell Lab of Ornithology K. Lisa Yang Center for Conservation Bioacoustics, Cornell University Ithaca New York USA
5. Faculty of Humanities and Social Sciences Oxford Brookes University, Headington Campus Oxford UK