Yellow-bellied fantail

The yellow-bellied fantail (Chelidorhynx hypoxanthus), also known as the yellow-bellied fairy-fantail, is found in the Indian subcontinent, the Himalayas, and portions of Southeast Asia including Thailand, Vietnam, and Myanmar. It is an altitudinal migrant.

Description
It is about 8 cm in size. It is yellow below and has a black eye-stripe, white wing-bar and broad black tail tipped white.

Classifiation
It used to be placed in the family of the fantails (Rhipiduridae), but DNA analysis has shown it to be a close relative of the fairy flycatcher and it has therefore been transferred to the Stenostiridae (IOC World Bird List), in the revalidated monotypic genus Chelidorhynx.

Social Behavior
It often gathers in mixed-species flocks, especially during winter, with leaf-warblers, tits, and black-faced warblers.