The wren is just 10 centimetres long and has a short tail that is often raised vertically. It is reddish brown above and brownish white below. The pointed beak is quite long and slightly curved downwards.
Resident in most of Europe, the wren migrates only from the northern parts of its range. It lives in woodland with dense undergrowth, overgrown clearings, shrubland and gardens.
The wren’s Latin name Troglodytes, meaning “cave-dweller”, refers to its habit of disappearing into cavities or crevices while hunting for insects, or to roost. Its ball-shaped nest is made of grass and moss, tucked into a hole in a wall or tree trunk. It has a very loud voice for its size, and its song is a burst of sweet music.