Located on the east of Malay peninsula and west of Kalimantan Barat Province. Faunisticaly closer with west and east Malaysia rather than Sumatra (Stattersfield et all 1998). Ranai slope on the south-east of Natuta Besar island still forested up to 1035 m.
Selected as Secondary Endemic Bird Area because of Silvery Wood-Pigeon Columba argentina present in this area (Stattersfield 1998). The other significant species is Dicaeum everetti bungurense, of which few information about the distribution mainly from the mainland. Nicobar Pigeon Caloenas nicobarida is not listed Natuna Island as part of its distribution by Smythies (1981).
BirdLife International (2023) Important Bird Areas factsheet: Pulau Natuna. Downloaded from http://www.birdlife.org on 08/02/2023.