1. BirdLife International; David Attenborough Building; Pembroke Street Cambridge CB23QZ UK
2. Department of Zoology; University of Cambridge; Downing Street Cambridge CB23EJ UK
3. ARC Centre of Excellence for Environmental Decisions; Centre for Biodiversity and Conservation Science; University of Queensland; St. Lucia QLD 4072 Australia
4. School of Geography; Planning and Environmental Management; University of Queensland; St. Lucia QLD 4072 Australia
5. Global Conservation Program; Wildlife Conservation Society; Bronx NY 10460 USA