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 Sometimes called "Africa's feathered locust", the red-billed quelea is considered a serious agricultural pest in Sub-Saharan Africa. In particular, they eat wheat in the dry season, rice in the early rainy season, and sorghum/millet in the rainy season. An individual red-billed quelea eats around of grain in a day, hence a flock of 2 million individuals—not an unusual size—can consume of grain in a day, or in a month. Their wide range, enormous population and fecundity make control difficult. Traditional methods to protect crops are mainly used in subsistence farming. When the crop is vulnerable, people go into the fields,