Panurus biarmicus

The Bearded Reedling is a small, long-tailed passerine associated closely with reedbeds beside water across temperate Eurasia. Despite its English name, it is not a true reed warbler. It is the sole species placed in the family Panuridae, and its account notes that it has no close living relatives. The available source supplied only limited species-level measurements and ecological figures, so the entry is restricted to its appearance, habitat, range and distinctive taxonomic position. (Wikipedia, general species account)