Hedge sparrow is a common term for the bird species found in various gardens and parks. However, there are several synonyms for this bird. The first synonym is "Dunnock," which is derived from the Old English word "dunn" meaning dull brown. This name refers to the bird's brownish-grey plumage. The second synonym is "Hedge Warbler," which is a common term used in some regions of England. Another synonym is "Prickly Back," which refers to the bird's habit of raising its feathers when under stress. Other synonyms include "Hedge Accentor," "Hedge Sparrow Lark," and "Small Hedge Sparrow." These different words show the diversity of languages and cultures that contribute to bird naming.