In the Asian region, overexploitation is considered a particularly significant threat for many threatened bird species, causing rapid declines in both numbers and range. Examples include: Philippine Cockatoo which was once widespread, and known from 52 islands, but with recent records from just eight; and Straw-headed Bulbul which was once widespread in lowland areas of South-East Asia, but with recent records almost all from Peninsular Malaysia, Sabah and Brunei.
In the Asian region, overexploitation is considered a particularly significant threat for many threatened bird species, causing rapid declines in both numbers and range (BirdLife International 2003). Examples include:
In the case of the cockatoo, trapping is changing the age structure of the remaining population, with fewer and fewer young birds (on the island of Palawan, the stronghold, chicks are taken from every accessible nest). Individual island populations are expected to go extinct as a result. For the bulbul, much sought after for its celebrated song, extinction is imminent in Sumatra. Continual imports of illegally captured Malaysian birds feed the high demand in Indonesia, depleting populations in its remaining stronghold (BirdLife International 2001, 2008).
Related Case Studies in other sections
Compiled 2004, updated 2008
BirdLife International (2008) Sought-after species face rapid declines. Presented as part of the BirdLife State of the world's birds website. Available from: http://birdlife.org/datazone/sowb/casestudy/181. Checked: 29/05/2016
|Key message: Overexploitation has already caused extinctions and remains a significant threat today|