The Indigobirds are a number of finch-like passerine bird species, related to whydahs. They occur across Africa, inhabiting grassland and open woodland. They are named for the male's breeding plumage, which in all species is various shades of indigo, blue and black. Outside of breeding season, he appears more like the females - dowdy shades of brown, grey and cream. They are brood parasites, using firefinches as their parental hosts. Unlike cuckoos, Indigobird chicks do not destroy the host's eggs. As the chick grows, he learns the song of his host species. Females favour a mate that sings the same tune as her foster parents. His diet consists of seeds and grains
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