Dunnock (Prunella modularis)

The Dunnock (Prunella modularis) is a small passerine bird found throughout temperate Europe and into Asia. It is by far the most widespread member of the accentor family, which otherwise consists of mountain species. is a resident in the milder west and south of its range, but as an insectivore, must migrate south from the colder parts of its range. It is a bird of woodland, shrub and gardens. It builds a neat nest low in a bush or conifer, laying 3-5 unspotted blue eggs. This is a Robin-sized bird, 13.5–14 cm in length, fairly drab in appearance, and somewhat resembling a small House Sparrow with its streaked back and general shape. It is also brownish underneath, and has a fine pointed bill. Adults have a grey head. The sexes are similarly coloured.

(source Wikipedia)