1. Baillie J, Hilton-Taylor C, Stuart S (eds) (2004) 2004 IUCN Red List of threatened species. A global species assessment. IUCN, Gland, Switzerland and Cambridge, UK
2. Brown JH, Lomolino MV (1998) Biogeography, 2nd edn. Sinauer Associates, Inc., Sunderland, Massachusetts, USA
3. Butchart SHM, Stattersfield A, Bennun L, Shutes S, Akçakaya H, Baillie J, Stuart S, Hilton-Taylor C, Mace G (2004) Measuring global trends in the status of biodiversity: Red List Indices for birds. PLOS Biol 2:2294–2304
4. Butchart SHM, Stattersfield A, Baillie J, Bennun L, Stuart S, Akçakaya H, Hilton-Taylor C, Mace G (2005) Using Red List Indices to measure progress towards the 2010 target and beyond. Philos Trans R Soc 360:255–268
5. Gaston KJ (2003) The structure and dynamics of geographic ranges. Oxford University Press, Oxford, UK