A sleek cuckooshrike in which males and females look strikingly different. Males are entirely black with a red or occasionally yellow-orange shoulder patch. Females have olive-gray upperparts and pale underparts with fine dark barring. Found in lush woodland and cultivation, gallery forest, and along forest edge. Male closely resembles other black male cuckooshrikes, especially Black Cuckooshrike, but note red or yellow-orange (instead of yellow) shoulders. The female closely resembles female Black Cuckooshrike, but is distinguished by its mostly black undertail with yellow edgings. Inconspicuous vocalizations include a “tik” call and a high-pitched, jumbled song.