Indian Robin

The Indian Robin is sexually dimorphic in plumage with the male being mainly black with a white shoulder patch or stripe whose visible extent can vary with posture. The northern populations have the upper plumage brownish while the southern populations are black above. The males have chestnut undertail coverts and these are visible as the bird usually holds the 6–8 cm long tail raised upright. The females are brownish above, have no white shoulder stripe and are greyish below with the vent a paler shade of chestnut than the males. Birds of the northern populations are larger than those from southern India or Sri Lanka. Juvenile birds are much like females but the throat is mottled.

Several populations are named based on their plumage differences. The nominate subspecies refers to the population found across southern Peninsular India. Race leucopterus is found in Sri Lanka. Race cambaiensis of western India and erythrura (erythrurus) of eastern India (south to around Sambalpur) have the males with brown backs. The population intermedius includes forms between cambaiensis, erythrura and fulicata in central India and parts of the Deccan region. A race munda was named for a specimen from Punjab but is now considered synonymous with cambaiensis.Older classifications treat the population in southern India under the name ptymatura while considering the type locality as Sri Lanka although the type locality has subsequently been restricted to Pondicherry.

Local names recorded by Jerdon include Nalanchi (Telugu), Wannatikuruvi (Tamil, Washerman bird), Kalchuri (Hindi) and Paan kiriththaa (Sinhala). The genus name indicates that it looks similar to Saxicola, the genus of the Pied Bushchat, a bird often found in similar habitats.(wiki)