Black-headed Sibia

A tiny, nearly tailless quail-like bird with a heavy bill, an orange-rufous chest patch, a pale whitish undertail, and dark, heavily streaked, cryptically patterned upperparts. Small groups inhabit native grasslands and scrub in lowlands and on low ridges. Confined to Sumba. Differs from Red-backed Buttonquail in lacking red facial areas, lacking bold spotting along its flanks, showing a whitish undertail, and possessing a stouter gray bill without yellow coloration. In flight, it also shows heavier streaking above than Red-backed Buttonquail. Calls of Sumba Buttonquail are currently unknown.

A medium-sized dark gray bird with a white eye, a black cap, and a carrot-colored bill. Endemic to the island of Reunion. Found in humid forest as well as secondary forest and forest dominated by exotic trees; now mostly confined to middle and high elevations. Often in small, noisy groups. Somewhat similar to male Reunion Cuckooshrike, but easily separated by the orange bill and pale eye. The song is an unmusical but varied series of rattling, metallic, and scraping notes, often given from a high perch. The calls include a “chek” note and a long mew. 

A distinctive, long-tailed cuckoo with a peaked black crest like a witch's hat, bright orange throat, rusty wings, a black back, and white nape and belly. Forages and sings high in dense canopy; seldom seen well enough for all these traits to be seen at once. Varied vocalizations are harsh, raspy, or metallic sounding and include high-pitched “veep-veep” notes, a strident “kooree”, and a maniacal rattling cackle.