1. School of Geography, Planning and Environmental Management, University of Queensland, Brisbane, QLD, 4072, Australia.
2. National Center for Ecological Analysis and Synthesis (NCEAS), University of California, Santa Barbara, Santa Barbara, CA 93101, USA.
3. Global Conservation Program, Wildlife Conservation Society, New York, NY, USA.
4. BirdLife International, Wellbrook Court, Cambridge CB3 0NA, UK.
5. School of Biological Sciences, University of Queensland, Brisbane, QLD 4072, Australia.
6. Department of Life Sciences, Imperial College London, Silwood Park, Ascot, Berkshire SL5 7PY, England, UK.