Quelea most related to "Foudia", a genus of six or seven species that occur on the islands of the western Indian ocean. This clade is sister to the Asian species of the genus "Ploceus". The following tree represents current insight of the relationships between the species of "Quelea", and their closest relatives. "Q. quelea" is a major pest to small-grain cereal crops in much of sub-Saharan Africa; the kernels of corn are too big for it. "Q. erythrops" may cause substantial damage to rice. "Q. cardinalis" is not known to raid crops. Quelea Quelea is a genus of small passerine birds
Red-billed quelea from northern and central Sudan and central Ethiopia in May and June, to breed in southern Sudan, South Sudan, southern Ethiopia and northern Kenya, moving back north from August to October. In southern Africa, the total population of the subspecies "Q. quelea lathamii" in October converges on the Zimbabwean Highveld. In November, part of the population migrates to the northwest to northwestern Angola, while the remainder migrates to the southeast to southern Mozambique and eastern South-Africa, but no proof has been found that these migration cohorts are genetically or morphologically divergent. The red-billed quelea is regarded as the most numerous