This area is located between Siak and Kampar rivers. Siak river is situated on the north-west of this area while Kampar river is in the south. The northern boundary of this area is paralel with Panjang strait.
4-5 days survey in Danau Bawah around Selat Panjang and Danau Metas in 1991 (van Balen 1991) recorded 128 birds species, including as Wallace's Hawk-eagle Spizaetus nanus, Sunda Wrinkled Hornbill Aceros corrugatus, Large Green-Pigeon, Great Hornbill Buceros bicornis, and Mangrove Pitta Pitta megarhyncha. Follow-up survey in 1992 (Burn & Brickle 1992) confirmed the important value of this area for bird, and recorded 7 hornbill species. But Storm's Stork Ciconia stormi and Whiite-winged Duck were not recorded.Storm's Stork Ciconia stormi, Hook-billed Bulbul Setornis ciriger and Grey-breasted Babbler Malacopteron albogulare live in Metas River, Belat and Belat Lake (Burn & Brickle 1992).
Non-bird biodiversity: Elephas maximus, Panthera tigris, Tapirus indicus and Tomistoma schlegelii (Scott 1989, Burn & Brickle 1992, Anon 1995, Colijn 1999).
BirdLife International (2019) Important Bird Areas factsheet: Hutan Rawa Gambut Siak-Kampar. Downloaded from http://www.birdlife.org on 26/08/2019.