Long-tailed Tits (Aegithalidae)

Black-browed Tit (Aegithalos bonvaloti) - HBW 13, p. 98

French: Mésange de Bonvalot German: Brauenschwanzmeise Spanish: Mito Cejinegro
Other common names: Black-headed/Bonvalot's Tit

Taxonomy: Acredula Bonvaloti Oustalet, 1892, Tatsienlu (= Kangding), Sichuan, China.
Forms a superspecies with A. niveogularis, A. iouschistos and A. sharpei; all four sometimes treated as conspecific, but they seem to be morphologically fairly distinct from one another and, while ranges overlap only minimally or not at all (e.g. range of present species meets or very marginally overlaps with that of A. iouschistos in SW China), there is no evidence of intergradation or hybridization between any of them. Races presumed to intergrade. Two subspecies recognized.

Subspecies and Distribution:

  • obscuratus ( Mayr, 1940) - NC Sichuan (mountains NW of Red Basin, in region of Wenchuan), in C China.
  • bonvaloti ( Oustalet, 1892) - SC China (W & C Sichuan S to SE Xizang, NW Yunnan and Weining region of W Guizhou) and extreme NE Myanmar (E of R Irrawaddy, S to Myitkyina).

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