White-collared Blackbird

Small, uncommon tanager of humid tropical lowland forest, sometimes found at army ant swarms. Typically inhabits low to mid-levels of shady understory, as singles or pairs. Sexes look alike, with bushy gray head cleanly cut off from the rich yellow underparts and olive-green upperparts. Song is a rich squeaky warble, at times prolonged.

A little-known, highly unusual songbird confined to the island of Buru. Taxonomically confusing; formerly considered a white-eye, but now thought to be an abnormal, arboreal pipit. A plain-looking bird with dull olive upperside and gray upperparts, but with a diagnostic, conspicuous rust-colored throat. Inhabits stunted montane forest, where it behaves like a nuthatch, climbing up and down tree trunks, and often accompanies mixed-species flocks singly or in pairs. Only known vocalization is short, high-pitched, downslurred “zit” note.

A large nectar-eating bird with a decurved beak and a long graduated tail. Dull brown above, it is mostly pale below with a broad rusty breast band and crown and a yellow undertail. Pairs prefer to breed in areas of flowering Protea in escarpment mountains; when these become senescent, the sugarbirds move to lower altitudes, congregating on other flowers such as aloes. The species sings a characteristic scratchy, jumbled twittering and twanging. The larger Cape Sugarbird is similar, but has a much longer graduated tail, moustache-like stripes, and a harsher song, and lacks the rusty breast and crown.