An encyclopedia article on weaver-birds (family Ploceidae), the small songbirds known for their elaborately woven nests. It covers the history of the name and classification, the African and Indian species, the nest forms (including the communal nests of the sociable grosbeak), the long-tailed widow-birds, and related seed-eating finches such as waxbills and the Java sparrow. It concerns ornithology, not textile weaving.