Sighting and photos (c) thilina.
Field Notes - There are conspicuous silvery-white streaks on upper mantle, scapulars and upperwing-coverts. The long tail and rest of plumage are black with greenish-brown tinge.?
The throat is paler, mostly creamy-white and mottled black. There is a long, whitish stripe extending from the eye, down sides of the long, thin neck.?