The ultramarine flycatcher or the white-browed blue flycatcher (Ficedula superciliaris)

The ultramarine flycatcher or the white-browed blue flycatcher (Ficedula superciliaris) is a small arboreal Old World flycatcher in the ficedula family that breeds in the foothills of the Himalayas and winters in southern India.

Description

Somewhat smaller than a sparrow (ca. 10 cm) and with a stocky build. The male is deep blue above, sides of head and neck are deep blue, and a prominent white patch runs from centre of throat, through breast to belly.

The amount of white on the brow and tail show clinal variation from West to East along the Himalayan foothills, which is sometimes taken to distinguish three races:

The western race from the western Himalayas has a distinctive white supercilium and white bases to the outer tail feathers.
The eastern race (Ficedula superciliaris aestigma) from the eastern Himalayas lacks distinct white patches.
The population from the south Assam hills (sometimes designated a third race cleta) completely lack any supercilium.