Cettiidae is a newly validated family of small insectivorous songbirds ("warblers"), formerly placed in the Old World warbler "wastebin" assemblage. It contains the typical bush warblers (Cettia) and their relatives. As a common name, cettiid warblers is usually used. Most live in scrubland and frequently hunt food by clambering through thick tangled growth. Among the "warbler and babbler" superfamily Sylvioidea, the Cettiidae represent an ancient lineage. As a group, they are probably closest to the Aegithalidae, the long-tailed tits and relatives.