''Quelea'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of small

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped') which includes more than half of all bird species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their ...

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

s that belongs to the weaver family Ploceidae, confined to

Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...

. These are small-sized, sparrow- or finch-like gregarious birds, with bills adapted to eating seeds. Queleas may be nomadic over vast ranges; the red-billed quelea is said to be the most numerous bird species in the world.

Taxonomy

There are three species:

Phylogeny

Based on recent DNA-analysis, the red-billed quelea is

sister A sister is a woman or a girl who shares parents or a parent with another individual; a female sibling. The male counterpart is a brother. Although the term typically refers to a familial relationship, it is sometimes used endearingly to ref ...

to a

clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach t ...

that consist of both remaining species of the genus ''Quelea'', namely ''Q. cardinalis'' and ''Q. erythrops''. The genus belongs to the group of true weavers (subfamily Ploceinae), and is 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 ''Ploceus'' is a genus (biology), genus of birds in the Ploceidae, weaver family (biology), family, Ploceidae. They are native to the Indomalayan realm, Indomalayan and Afrotropical realms. Taxonomy and systematics Phylogeny The genus ''Plo ...

''. The following tree represents current insight of the relationships between the species of ''Quelea'', and their closest relatives.

Impact on agriculture

''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. cited on

References

Ploceidae Bird genera Taxa named by Ludwig Reichenbach {{Ploceidae-stub