This is the male. The Tickell's Blue Flycatcher is about 11–12 cm long. It sits upright and often forages in the undergrowth. The male has the upperparts dark blue and the throat breast and flanks are orange fading into the buffy white belly. The female is duller blue with a brighter blue brow, shoulder, rump and tail.
tropical rainforest, found in dense scrub to forest habitats.
I spotted this and a few other birds flying around a small patch of forest right near the accommodation out at Crocodile Lake in Cat Tien National Park.