Red-billed quelea province in today's Sudan. "Red-billed quelea" has been designated the official name by the International Ornithological Committee (IOC). Other names in English include black-faced dioch, cardinal, common dioch, Latham's weaver-bird, pink-billed weaver, quelea finch, quelea weaver, red-billed dioch, red-billed weaver, Russ' weaver, South-African dioch, Sudan dioch and Uganda dioch. Based on recent DNA analysis, the red-billed quelea is the sister group of a clade that contains both other remaining species of the genus "Quelea", namely the cardinal quelea ("Q. cardinalis") and the red-headed quelea ("Q. erythrops"). The genus belongs to the group of true weavers (subfamily Ploceinae), and is most
Red-billed quelea quelea needs of precipitation to breed, with nest building usually commencing four to nine weeks after the onset of the rains. Nests are usually built in stands of thorny trees such as umbrella thorn acacia ("Vachellia tortilis"), blackthorn ("Senegalia mellifera") and sicklebush ("Dichrostachys cinerea"), but sometimes in sugar cane fields or reeds. Colonies can consist of millions of nests, in densities of 30,000 per ha (12,000 per acre). Over 6000 nests in a single tree have been counted. At Malilangwe in Zimbabwe one colony was long and wide. In southern Africa, suitable branches are stripped of leaves a few days