Appearance
The adult White-throated Fantail is about 19 cm long. It has a dark fan-shaped tail, edged in white, and white supercilium and throat. There is otherwise much variation in plumage between races. Most resemble the Himalayan ''R. a. canescans'' which is mainly slate grey above and below, with a black eye mask, and a white throat and eyebrow.Local names for the bird in India include – ''Nasoni sorai'' in Assamese.
Behavior
The White-throated Fantail lays three eggs in a small cup nest in a tree.The White-throated Fantail is insectivorous, and often fans its tail as it moves through the undergrowth.
Birds use the same song year after year, with progressively small changes, with the result that the song sounds very different after 4–5 years. The male's call is a valuable tool in detection and identification of the bird, which can often be confused with the White-browed Fantail, ''R. aureola'', where their ranges overlap. ''R. aureola'' has light underparts and prominent spots in two rows on the wings. Its call is rather functional, and not as pleasant and aesthetic as that of ''R. albicollis''.
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