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.