Hwang Ho and Kokonor.
Until recently considered conspecific with L. sphenocercus, but genetically distinct#R and differs in larger size (“wing significantly longer” in HBW; allow 2); much darker grey upperparts (2); no white supercilium (2); no white flash on secondaries (2); high-elevation habitat (breeding 3000–5200 m vs 200–1100 m in HBW) (1). Monotypic.
C China (C & E Qinghai, SW Gansu, E Xizang, N & W Sichuan).
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