About the Authors

Stuart H.M. Butchart

To whom correspondence should be addressed. E-mail: stuart.butchart@birdlife.org

Affiliation BirdLife International, Cambridge, United Kingdom

H. Resit Akçakaya

Affiliation Applied Biomathematics, Setauket, New York, United States of America

Janice Chanson

Affiliation Conservation International/Center for Applied Biodiversity Science-World Conservation Union (IUCN)/Species Survival Commission Biodiversity Assessment Unit, IUCN Species Programme, Center for Applied Biodiversity Science, Conservation International, Washington, D. C., United States of America

Jonathan E.M. Baillie

Affiliation Institute of Zoology, Zoological Society of London, London, United Kingdom

Ben Collen

Affiliation Institute of Zoology, Zoological Society of London, London, United Kingdom

Suhel Quader

Affiliations Department of Zoology, University of Cambridge, Cambridge, United Kingdom, Royal Society for the Protection of Birds, Sandy, United Kingdom

Will R. Turner

Affiliation Center for Applied Biodiversity Science, Conservation International, Washington, D. C., United States of America

Rajan Amin

Affiliation Institute of Zoology, Zoological Society of London, London, United Kingdom

Simon N. Stuart

Affiliation Conservation International/Center for Applied Biodiversity Science-World Conservation Union (IUCN)/Species Survival Commission Biodiversity Assessment Unit, IUCN Species Programme, Center for Applied Biodiversity Science, Conservation International, Washington, D. C., United States of America

Craig Hilton-Taylor

Affiliation World Conservation Union (IUCN) Species Programme, Cambridge, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: SB HA JB CH SS JC BC RA SQ WT. Wrote the paper: SB HA BC.