Breeding regions are OR. Breeding subregions are Malay Pen., Sumatra, Simeulue and Nias (w of n Sumatra), Riau and Lingga is. (e of c Sumatra), Bangka and Belitung (e of s Sumatra), Java, Bali, Borneo and Banggi (n of ne Borneo).
Sumber: IOC World Bird List, v
