White-crested Helmetshrike

A small greenish bird with a barred chest and tail, and a dark stripe through the eye that droops down across the cheek. Young birds can be almost unbarred and may appear similar to the grayer Black-eared Cuckoo. Often perches prominently on top of a shrub or tree, and calls repeatedly with a loud piercing descending whistle. Occurs in Indonesia and across much of Australia (including arid inland areas).

Typical Cuculus cuckoo: most adults are gray with black stripes on a white breast and belly, but some females are “hepatic”; they appear rufous overall with extensive barring. Virtually identical to Himalayan and Oriental cuckoos, which migrate through and winter in Sunda’s range; look for Sunda’s more contrasting darker gray upperparts, wider bars on the underparts, and buffier unmarked vent. Juvenile is dark grayish black above with white edging to the feathers. Like most cuckoos, more often heard than seen; listen for its 2–3 note hooting song, which averages higher than that of Oriental. A species of montane and foothill forest.

A distinctive small black, white, and red honeyeater with a downcurved bill. Jet black with diagnostic red patches on rear crown, throat, and rump, as well as a clean white belly. The black areas are gray on juveniles. Singles or pairs found in forest, forest edge, and scrub within the lowlands and foothills on Timor. Unmistakable in its limited range. Simple, very high-pitched song consists of rapid-fire notes, “si-si-si-si-si-si-si”; also gives “zit” call notes.