Dunnock

Prunella modularis

The dunnock is a small passerine, or perching bird, found throughout temperate Europe and into Asian Russia. Dunnocks have also been successfully introduced into New Zealand. It is by far the most widespread member of the accentor family, which otherwise consists of mountain species. Other common names of the dunnock include the hedge accentor, hedge sparrow, or hedge warbler.
Dunnock  Dunnock,Geotagged,Prunella modularis

Appearance

A European robin-sized bird, the dunnock typically measures 13.5–14 cm in length. It possesses a streaked back, somewhat resembling a small house sparrow. Like that species, the dunnock has a drab appearance which may have evolved to avoid predation. It is brownish underneath, and has a fine pointed bill. Adults have a grey head, and both sexes are similarly coloured.
Dunnock or Hedge sparrow Fortunate enough to have a few of these in my garden. Dunnock,Geotagged,Isle of Wight,Prunella modularis,United Kingdom,birds

Distribution

Dunnocks are native to large areas of Eurasia, inhabiting much of Europe including Lebanon, northern Iran, and the Caucasus. They are the only commonly found accentor in lowland areas; all the others inhabit upland areas. Dunnocks were successfully introduced into New Zealand during the 19th century, and are now widely distributed around the country and some offshore islands.
Dunnock Catching some sun in the garden Cumbria,Dunnock,Kings Meaburn,Prunella modularis

Behavior

The main call of the dunnock is a shrill, persistent ''tseep'' along with a high trilling note, which betrays the bird's otherwise inconspicuous presence. The song is rapid, thin and tinkling, a sweet warble which can be confused with that of the Eurasian wren, but is shorter and weaker.
Dunnock (juvenile) Enjoying the early morning sun Dunnock,Geotagged,Prunella modularis,Summer,United Kingdom,birds,isle of wight

Habitat

Favoured habitats include woodlands, shrubs, gardens, and hedgerows where they typically feed on the ground, often seeking out detritivores as food.

References:

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Taxonomy
KingdomAnimalia
DivisionChordata
ClassAves
OrderPasseriformes
FamilyPrunellidae
GenusPrunella
SpeciesP. modularis