Pale-chinned Flycatcher

The pale-chinned flycatcher, also known in the past as the pale-chinned blue flycatcher and Brook's flycatcher, is a medium-sized flycatcher, 15.5 to 18cm long. The sexes are similar: dull bluish grey on the upperparts with a rufous chest, a whitish throat and white below, and the males lack the intense blue of many other mainland Asian Cyornis species (Wikipedia, general species account).

Its nesting season is April to June. The source read gives no range, habitat or diet information, and does not name Bhutan, so its occurrence there is flagged for checking.