Males display a vibrant orange-rufous throat and chin, which extends to the rear flanks and mid-belly, with the lower underparts being whitish.

In stark contrast, the females are characterized by their grayish upperparts and crown, and strongly rufous-tinged rump, tail, and edges of the wing feathers.

Juvenile large blue flycatchers resemble females but are distinguished by their darker brown plumage, rufescent spots on the upperparts, and deep buff throat and breast with dark bars and scaling, while their belly appears whitish with faint dusky mottling.

Hunting takes places in low, shaded areas of the forest, where the species will sit and wait for these invertebrates to pass by.

This species is found in north eastern India throughout most of the year although during breeding season it is much more common to find these birds have migrated to northern Myanmar.