The red-billed quelea (Quelea quelea) is a small, migratory, sparrow-like bird of the weaver family, Ploceidae, native to sub-Saharan Africa. It is approximately 12 cm (4.7 in) long and weighs 15 to 26 g (0.53 to 0.92 oz) 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. It constructs oval roofed nests woven from strips of grass hanging from thorny branches, sugar cane or reeds. It breeds in very large colonies. The quelea feeds primarily on seeds of annual grasses, but also causes extensive damage to cereal crops. It is regarded as the most numerous undomesticated bird on earth, with the population sometimes peaking at an estimated 1.5 billion individuals. (Full article...)

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