Atiu Swiftlet

Rare and localized highland finch, restricted to upper montane forest and open scrubby and grassy habitats above the treeline. Generally not very obvious, often foraging quietly in dense growth, but flocks will sometimes betray their presence by flying overhead and giving a chorus of chittering twitter calls. Found only on high peaks in Sumatra, Java, and Sulawesi. Combination of thick conical bill, bright yellow wing-bars, and well-streaked underparts are unique within this species’ range and habitat. A currently undescribed population in north-central Sulawesi has reddish-orange in place of other populations’ yellow patches. Song is a dry, whirring buzz following a few husky notes.

A huge black hornbill with a prominent knob on the bill, conspicuous red “gills” on the sides of the beak, a turquoise-blue throat pouch, and a white tail. Males have a red casque and rufous neck, females a yellow knob and black neck. Juveniles resemble male, but with an entirely yellow casqueless bill. Found in pairs or groups in canopy of forested and wooded areas of lowlands and hills. Larger and more colorful than Sulawesi Hornbill. Gives powerful, short “krok” notes and a more drawn-out “oooo-aa-ooo-aaa.”

A dingy, entirely blackish starling with a long graduated tail and a dark eye. Juvenile shorter-tailed and browner than adult, with streaks below. Gregarious, often found in noisy groups, occurring in a variety of wooded habitats within the lowlands and foothills. Duller than Metallic Starling, with a dark eye and a shorter tail. Vocalizations include metallic “zip” and whining “weeer” call notes. Song is a bold set of uneven “glee-gloo-glee-gloo” notes.