1. Centre d'Ecologie Fonctionnelle et Evolutive, CEFE-CNRS UMR5175, 34293 Montpellier, France.
2. International Union for Conservation of Nature, CH-1196 Gland, Switzerland.
3. United Nations Environment Programme World Conservation Monitoring Centre, Cambridge CB3 0DL, UK.
4. School of Geography and Environmental Studies, University of Tasmania, Hobart, Tasmania 7001, Australia.
5. BirdLife International, Cambridge CB3 0NA, UK.
6. Conservation International, Arlington, VA, 22202, USA.
7. Department of Biology and Biochemistry, University of Bath, Bath BA2 7AY, UK.
8. Al Ain Zoo, Abu Dhabi, United Arab Emirates.