Alluvial flat in this area formed in Singkil River estuary and some other small rivers.
Giesen and van Balen (1992) reported Storm Stork Ciconia stormi, Lesser Adjutant Leptoptilos javanicus and White-winged Duck Cairina scutulata from this area. The area might also important for other waterbirds.
Non-bird biodiversity: Other biodiversity include Crocodylus porosus, Hylobates lar, Pongo pygmaeus, Callsciurus prevostii, Helarctos malayanus, and Panthera tigris.
BirdLife International (2020) Important Bird Areas factsheet: Trumon - Singkil. Downloaded from http://www.birdlife.org on 25/02/2020.