The melodious warbler (Hippolais polyglotta) is an Old World warbler in the tree warbler genus Hippolais. It breeds in southwest Europe and northwest Africa. It is migratory, wintering in sub-Saharan Africa. This small passerine bird is a species found in open woodland with bushes. Order: Passeriformes, Family: Acrocephalidae, Genus: Hippolais, Species: Hippolais polyglotta (Vieillot, 1817).