Plain gray cuckooshrike with relatively little contrast overall. Male is gray with darker wingtips and a white vent. Female is paler gray with thinly barred underparts. Can be mistaken for Black-winged Cuckooshrike, of which both resident and migratory subspecies are within the range of Indochinese. Note Black-winged’s darker overall plumage, much fainter barring on the female’s underside, and more evenly spaced white spots on the black undertail (Indochinese’s white spots are all clustered together into a cohesive white blob). Inhabits open forests, particularly dry deciduous forests, as well as forest edges and gardens. Gives squeaky yelps, often heard when flying over in small flocks. Gives a descending series of high-pitched whistles.