Rotbauch-Blauschnäpper Niltava sundara

As in other niltavas, the male is brilliantly colored while the female is drab brown overall. Male bright blue with an orange belly; female is brown with a white throat strap and a small blue crescent on the neck. Female is very similar to other niltavas, intermediate in size between Little and Large niltavas, with stronger warm tones on the wings and tail than Fujian Niltava. Active in the middle and upper layers of broadleaf and mixed hill forests, where it often associates with other species in mixed flocks. Gives a series of high, piercing metallic whistles.