central and northern hill regions of Nepal.
Until recently considered conspecific with T. cyanurus, but various analyses indicate considerable morphological and genetic divergence#R#R#R; differs in its bluish vs white preocular supercilium in male (1); darker, richer blue upperparts including cobalt-blue vs deep turquoise-blue rump and outer tail in male (2); purer white (less buffy) underparts with more extensively maculated breast in male (2); longer tail (effect size 6; score 3); different song (fewer notes, other technical details) (at least 1). Proposed race pallidior (NW Himalayas) is a synonym. Monotypic.
NE Afghanistan and N Pakistan E through Himalayas to NE India (Arunachal Pradesh), N to C & S China (from E & N Qinghai, SW Gansu and S Shaanxi, S to W & N Yunnan), probably also N Myanmar and N Vietnam (W Tonkin); non-breeding at lower altitudes S of breeding range and N of SE Asia.
Food and feeding
Status and conservation
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