African Quailfinches are usually seen in pairs or small flocks; and they frequent open areas with patchy grass growth - often close to water - including sandy grassland, marshes, farms and croplands, as well as recently mowed areas. The African Quailfinch is a ground feeder and its staple diet consists of small grass seeds. Particularly during the breeding season, they seek out live food, such as insects, spiders and worms.
The African Quailfinch is monogamous unless its mate dies, in which case it will seek out a new mate. These finches build their dome-shaped nest made of grass stems and blades on the ground. The average clutch consists of 3 to 6 white eggs. Both parents participate in the incubation duties, though the female does most. The incubation period is about 14 days.The young leave the nest about 19 to 20 days after hatching and are independent when they are about 30 days old.
Its call sounds like a metallic "trillink" or "chwillink." Its song consists of a series of "click, clack, cluck" notes delivered rapidly and in succession.
Source : www.beautyofbirds.com