Chestnut-bellied Rock Thrush

The chestnut-bellied rock thrush is a member of the Old World flycatcher family, 21 to 23cm long and weighing 48 to 61g. The male has a blue-grey crown and upperparts with darker lores and throat and deep chestnut underparts. The female has dull grey-brown upperparts and scalloped slate-grey with buffy-white underparts, with a whitish-buff eye-ring and post-auricular patch (Wikipedia, general species account).

Its natural habitat is temperate forest. It is an altitudinal migrant and strongly shows migratory restlessness the night before moving. It is native to the Himalayas, the Purvanchal Range and southern China, and some birds winter in northern Indochina. The source read does not name Bhutan, and gives no diet or breeding information.