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The red-billed quelea (Quelea quelea), also known as the red-billed weaver or red-billed dioch, is a small—approximately 12 cm long and weighing 15–26 g —migratory, sparrow-like bird of the weaver family, Ploceidae, native to Sub-Saharan Africa. Non-breeding birds have light underparts, striped brown upper parts, yellow-edged flight feathers and a reddish bill. Breeding females attain a yellowish bill. Breeding males have a black (or rarely white) facial mask, surrounded by a purplish, pinkish, rusty or yellowish wash on the head and breast. The species avoids forests, deserts and colder areas such as those at high altitude and in southern South Africa. It constructs oval roofed nests woven from strips of grass hanging from thorny branches, sugar cane or reeds. It breeds in very large colonies.

Source : Wikipedia