Ketupa sumatrana
Family: Owls · Status: Rare resident · Size: 45.5–46.5 cm · Conservation: Near Threatened
Resident in the Thai-Malay Peninsula, Sumatra, Java, Borneo and Bali.
Adult has brown-and-buff bars on its upperparts, blackish-and-whitish bars on its underparts, pitch black eyes, yellow bill and outward facing ear tufts. Juvenile has an overall white plumage with dark bars over the upperparts and underparts.
Found in forested areas.
Diet includes grasshoppers, beetles, rodents, birds and snakes. Had been observed to prey on Long-tailed Macaque.