Checker-throated Woodpecker

Fierce-looking brown-and-white fish-eater. Note adult’s contrasting white belly and white tail with a broad black bar across the tip. Juvenile is paler overall, with a streaked brown breast and barred underwings. Smaller Lesser Fish-Eagle has a less contrasting tail pattern and typically a more jagged-edged white belly patch in adults; juveniles average paler below overall. Gray-headed forages around rivers, lakes, and swamplands. Vocal; often detected by its hoarse yelping screams.

The only batis on Bioko. Patterned like a typical batis, with a white belly and throat, black wings with a white bar, and a black face. Males have a black crown, a black back, and a black chest band, whereas females have a gray crown, a gray back, and a rusty chest band. Both sexes have limited white above the eye that can appear like a broken eyeline. Infrequently encountered but widespread from lowland forest to mid-montane forest, where it can be seen in forest and disturbed forest, including plantations. Songs include a series of high-pitched whistled notes, and a few harsh notes followed by a fast trill that descends slightly in pitch. 

A distinctively plumaged, vocal cotinga. Light gray, with darker gray wings and a black face. Occurs in a variety of forested habitats, preferring swampy areas. Perches upright on branches in the forest canopy, vocalizing more frequently than most other cotingas; listen for its rising, Smooth-billed Ani-like “corree” call with vibrato.