A very small warbler, one of the lightest birds in Spain. It has sandy-brown plumage with dark streaking, with paler plain underparts. It is found in marshy areas, in arable crops, irrigated areas and the edges of streams and rivers. It feeds on small insects, spiders and other invertebrates. It has a characteristic undulating song flight, with a “zit” note delivered on each ascent. It is present throughout the year.
