Dunnock Bird is a demure little bird, skulking and frequently unobtrusive, usually seen shuffling mouse-like on the ground. Dunnock Bird is brown and grey, the warm brown mantle clearly streaked with black, and the underparts are dull grey-brown with mottled brown streaks along the flanks. The head, neck, throat and breast are a clean lead-grey, with brown cheeks and a darker mottled crown. The bill is thin, black and warbler-like.
Dunnock Bird is a familiar resident 'pioneer' garden bird in Britain, which can be found anywhere with dense scrubby undergrowth. Dunnock Bird is commonly encountered in gardens, parks, churchyards, open mixed woodland, farms, scrub, hedges, young conifer plantations and heaths, as well as on overgrown rough ground in urban areas such as railway embankments, especially where these are a little damp. It is attached to spruce forest in northern parts of its range, where it is usually just a summer visitor.
The common call of Dunnock Bird is a rather coarse, high-pitched "tiih", often repeated a number of times and given both as a contact call and an alarm. Dunnock Bird also gives a thinner, less coarse "seep" and a shivering "ititititi", the latter typically given outside the breeding season and rather like the alarm call, but more silvery in quality. The song is a high-pitched scratchy little ditty, fairly rapid and expressed on a level tone without trills or flourishes, confusable with the Wren's song but slower and much less emphatic, lasting 1.5-3 seconds but also in longer phrases. It is rather regular and unvarying, such as "s s'tsi'ti'si'ti'teew'ti'ti'deuw'tii'si'si'ti".