Scarlet-rumped Trogon

Large scoter, with distinctive white patch on wing. Dark chocolate-brown overall; males are darker than females and have small white mark under eye, dark knob on the bill, and pink bill tip. Females have two rounded white patches on face. At a distance, separated from Surf Scoter by more sloping head shape and white in the wing. Winters on coastal waters and large freshwater lakes. Occasionally found on large inland lakes during migration. Dives frequently, feeding on mollusks and crustaceans.

Tiny, drab bird with a sharp bill, a dull olive-green back, and buffy yellow underparts and forehead. Found in lowland rainforest, secondary forest, and sometimes plantations, usually in the canopy. Uncommon and inconspicuous, in pairs or small flocks. Similar to Yellow Penduline-Tit, but much duller and found in different habitat. Could be confused with Tit-Hylia, but duller overall, without streaking on the head and breast. Could also be confused with some dull sunbirds, but has a shorter, deeper-based, and sharper bill. The vocalizations are very high-pitched “sit” notes that are easily missed.

Old World oriole that is unusual in nearly lacking yellow in its plumage. There is a dark hood which is solid in males and streaky in females. A small white mark on the wing and pale yellow marks in the outer tail can be conspicuous in flight. Found in the canopy of rainforest at low and middle elevations. Song is a series of slurred, low-pitched liquid whistles. Calls include a harsh, upslurred nasal scold. Easily identified, as it is the only oriole on the island of Sao Tome.