Bianchi's Warbler

A martin-like swallow with a bicolored plumage pattern of steel-blue upperparts and pale underparts. Pairs or small groups flit low over grassland, scrub, farmland, and open woodland, often near water. It is a migrant to the southern parts of South Africa, but it is resident elsewhere, with some poorly understood movements. The Pearl-breasted Swallow differs from House Martin and Gray-rumped Swallow by having a dark (not pale) rump and pale (not dark) underwings.

An Old World oriole with mostly yellow plumage, a black hood, and a red bill. Note the fairly plain olive-and-black wing with a small white patch along the front edge. Found in rainforest canopy at low and middle elevations. Similar to Black-winged Oriole and found in the same habitat, but distinguished by the olive-green rather than black center of the tail and by the white patch on the wing. Also similar to African Black-headed Oriole, but usually separated by habitat and range. Further distinguished by the wing pattern, which is plainer, without bold white feather edgings. 

Small owl of west and central African rainforest. Note the white slash on the shoulder, the small ear tufts, and the pale spots on the underparts. The overall color varies from brown in the western part of the range to cinnamon in the east. Local and scarce in lowland rainforest. Usually detected by its vocalization, a long descending whistle, repeated with pauses of several seconds. Fairly similar in appearance to African Scops-Owl, but is brown or rufous rather than gray, has spotted rather than striped underparts, and is found in different habitat.