The Acrocephalidae family, also known as reed warblers, marsh- and tree-warblers, or acrocephalid warblers, includes various species of relatively large warblers. These birds typically have plain olive-brown upperparts and yellow to beige underparts and are often found in open woodlands, reedbeds, or tall grasses. Their habitat range extends from southern to western Eurasia and into the Pacific, with some species in Africa. Notable genera within this family include Acrocephalus with marsh-warblers and about 42 species such as the moustached, aquatic, sedge, and common reed warblers, some of which have become extinct, like the nightingale reed warbler and others. Genus Arundinax features the thick-billed warbler, while Genus Iduna includes species like the booted and Sykes's warblers. Genus Hippolais houses species such as the melodious and icterine warblers, and Genus Calamonastides and Graueria are home to the papyrus yellow warbler and Grauer's warbler, respectively. Meanwhile, Genus Nesillas includes brush warblers, with five living species and one recently extinct. Among these, the Aldabra brush warbler is noted to have gone extinct around 1984.