Wrens (Troglodytidae)
Wrens are very small to medium-sixed birds, mainly brown, buff and grey in colour, and often heavily barred or streaked. They have short, thin, often decurved bills, short rounded wings, and mostly short, cocked tails. Their legs are strong and often relatively long. They are mostly secretive birds, spending a lot of their time in dense vegetation, often close to the ground. This secretiveness accounts for their loud songs. Most nest in holes or construct domed nests with side entrance holes, and many are polygamous.
There are sixty species worldwide, of which only one is found in Europe.