Rufous-bellied niltava (Niltava sundara)
It is a large, stocky and brightly coloured flycatcher with rounded head shape, fairly short tail and broad-based bill. The male of nominate race has bright ultramarine-blue in upper forehead, crown and nape. The lower forehead, face to nape side, mantle and back are black or blackish-blue. It has an iridescent cobalt-blue patch on side of neck; rest of upperparts are deep blue, iridescent blue on rump and tail; upperwing are also deep blue, except for prominent bright cobalt-blue lesser coverts. The underparts are uniform rich orange-rufous. The iris is dark brown; bill is black; legs are grey to dark horn or plumbeous brown. The female has head and upperparts greyish olive-brown, fringes of wing-coverts and edges of flight-feathers are bright rufous, inner webs are darker or blackish, tail is broadly edged dull rufous, lores to eye and chin pale are buffish, broad white gorget across lower throat merging with small iridescent pale blue spot on side of neck, dull greyish-olive breast, buffish-grey below, whiter on centre of belly. The juvenile is similar to female but has darker brown on head and upperparts, heavily flecked on head and spotted on mantle, back and scapulars are buffish, rump and uppertail are broadly tipped buff, face finely mottled buff and brown, narrow pale buffish-yellow gorget on lower throat, breast is mostly pale buff with broad brown fringes, becoming brown bars or scaling on whitish belly and flanks; wing and tail are bluish in male, rich brown in female. The race whistleri (North India) male has paler rufous underparts than nominate, and female has paler olive-grey upperparts, paler rufous tail and more greyish-olive on underparts.