1. Silwood Park CampusImperial College London Buckhurst Road Berkshire SL5 7PY U.K.
2. Current address: Fauna & Flora International David Attenborough Building, Pembroke Street Cambridge CB2 3QZ U.K.
3. Durrell Wildlife Conservation TrustLes Augres Manor Jersey JE3 5BP Channel Islands
4. IUCN Global Species ProgrammeDavid Attenborough Building Pembroke Street Cambridge CB2 3QZ U.K.
5. Zoological Society of London Regents Park London NW1 4RY U.K.
6. IUCN Species Survival CommissionInstituto Venezolano de Investigaciones Científicas and Provita Caracas Venezuela
7. Synchronicity EarthThe Malthouse 17‐20 Sydney Buildings Bath BA2 6BZ U.K.
8. Department of ZoologyUniversity of Oxford 11a Mansfield Road Oxford OX1 3SZ U.K.