Length: 21 cm.
The male and female have like plumage.
Voice: ‘Tchack tchack’, when alarmed also ‘terr terr’, at night and in flight a clear ‘see-ip’.
Song: 4 flute-like tones interspersed with chattering and rasping sounds.
Size of Egg: 22.0—29.1 x 17.2—20.7 mm.
The redwing is a typical thrush of northern Europe and Asia. In rare instances it also nests in central Europe in colder mountain areas near mountain streams. During its migration in the winter months it occurs in abundance in central Europe on its way to its winter quarters in western and southern Europe, or as far south as northwest Africa. At this time it forms large flocks that alight in beech and mountain ash woods to feed on rowanberries. Sometimes it joins flocks of field fares, some pairs staying with them even during the nesting period.
Between the middle of March and the beginning of April the redwing returns to its breeding grounds, in thin birch woods as well as coniferous forests with thick undergrowth and, in Scandi- navia, also in larger parks. Their nests are found in deciduous-and coniferous trees at a height of about 3 metres, in tundras only 30 to 50 centi metres above the ground, and sometimes even on the ground.
Made of dry twigs, roots, plant stalks and mud, it is plastered inside with a layer, of mud mixed with mucous secretions. The female lays 4 to 6 eggs from May to July, which both birds take turns incubating for 13 to 15 days. The young are fed mostly on insects and their larvae by the adult birds for 11 to 14 days in the nest, plus a further three weeks after fledging. When the young have fledged the redwings gather in flocks, which set out on their southward journey at the October or the beginning of November.