Dunnock

The dunnock is a small passerine, or perching bird, found throughout temperate Europe and into Asian Russia. Dunnocks have also been introduced and become common in New Zealand. It is the most widespread member of the accentor family; most other accentors are limited to mountain habitats. Other, largely archaic, English names for the dunnock include hedge accentor, hedge sparrow, hedge warbler, and titling.

Summary from Wikipedia