The distribution and abundance of the alien invasive White-rumped Shama (Copsychus malabaricus) in Taiwan.
The White-rumped Shama (Copsychus malabaricus) is an alien invasive species in Taiwan. The distribution and abundance of this species was estimated based on recorded observation of active birders, the database of 1988-2007 provided by the Chinese Wild Bird Federation, literature citation, a field survey conducted from 2006 to 2008 and an eradication project conducted from 2007 to 2008. This species was found primarily in the western hilly areas of Taiwan at elevations below 400 m. Since it was first recorded in the wild in 1988, it has bred in recent years resulting in confirmed sustainable feral populations in Taiwan. The population sizes of the species in Huben Village, Linnei Township, in Yunlin County remained low originally but the rate of increase steadily increased after 2005. However, the areas where this invasive feral population has established itself are still confined to southern and central-western Taiwan. Unlike earlier avian invaders in Taiwan, the White-rumped Shama has the ability to invade lowland natural forest areas. Therefore, it is recommended that proactive control management is executed at a time when their population is still limited in number and localized.