Indian robin is a small sized bird. Male are black in colour, females are brown in colour. Males have a white shoulder patch, visible more on extension of wings while flying. They are very common birds in the neighborhood I almost see them every day in my frontyard.
Scientific name :Copsychus fulicatus
Both usually raise their tail for showing their vent which is chestnut /orange in colour. Pied bushchat is also looks same with black colour, white shoulder patch but smaller in size than Indian robin.
Here on this blog are the other pictures of other birds I shot.